Are you neverous nervous when you talked with native speaker in English?

(You used past tense for the verb "talk." There are two ways to fix this. If you are really asking the question in past tense, then change "are" with "were."  If you are asking the question in general, then change the past tense to simple present tense.)

It might be the common issue in China. I can read an (Don't forget to add a/an/the before most nouns, especially if it's a common noun) aricle article or write many words in English, but when I speak out, my brain is becomes (when expressing change, use "become" instead of "is" because "is" just states the condition whereas "become" shows the change) blank or extramly extremely active inactive (I think you mean inactive?). When i I (always capitalize "I") want to say something/express myself in English, my brain will search for (The conjunction "for" is usually added with the verb "search" or "look" when you are finding something.) which word and which grammer i shoul grammar I should use. Then nothing will come out from me, or if I speak word by word (For this case, you need "if"), or absue grammer abuse grammar (Ummm... this sentence is hard to understand. Do you mean that either no words will come out from you or you can say something, but often it's the wrong words and grammar?). How can I beat this issue? And (You can skip "and" here. "And" is mostly not a first word used in a sentence after a question.) I don't know the person who is talking with can unstander me if the person [who I'm talking to/who is talking to me] can understand me. (When using an example in a sentence, add the "if" conditional. Also, the person I am talking to = the person who's talking to me. It just depends on how you would want to construct the sentence.)

Hope this helps~! I hope my explanation wasn't very confusing.

Running

Running is one of my hobbies and I have been keeping it up for 7 years.

I run 2~3 times a week and with (If you want to add more details to a sentence, it is better to use the conjunction "with" because "and" is a conjunction that separates two clauses) a distance of running is 5~7km at one time usually.  (This isn't grammatically wrong but the meaning can be confusing. Running "one time" means you only did it once EVER. If you repeatedly do it, then I think "usually" is the better word.)
Although I had run sometimes 10km before, I have started running with light dumbells dumbbells in hands (You have two choices of corrections here. 1. in hand 2. in my hands. "in hands" is wrong because of the lack of an object. Either you add "my" or you change "hands" into "hand" so that the example would sound general. 1. is somewhat difficult to explain so feel free to message me if you're confused), so a (If you are aware of the noun, use "the" instead of "a." If you are referring to the noun in general, use "a.") the distance became short.

Now is (Either add a linking verb or a comma after "now" if it's the first word of the sentence) the best season for a running. (If you are aware of the noun, use "the" instead of "a." If you are referring to the noun in general, use "a.")
The weather is agreeable (suggestion: "agreeable" sounds unnatural. I think it's better to use the word "nice/pleasant/enjoyable/delightful.") and many flowers are blooming.

I'll go running tomorrow( ･`ω･´)

Hope this helps~! Running is nice and your running distance is impressive!

I think a native could answer this question better but I think there's a pattern when using pronoun+self. The subject pronoun should be the same pronoun used with the suffix -self. Don't you think you are the only one who are thinking about* themself*? 1. *themself* is automatically wrong because "them" is in plural form so the -self suffix should also be changed to its plural form, thus the word should be *themselves* instead. 2. A subject cannot be talking about another "self" because a subject has only ONE self. I cannot be thinking of yourself because my "self" is not you. My "self" is *myself.* I hope this was easy to understand. Let me provide some example. She was thinking of only herself (This is correct because she is talking about the same person. Her.) I'm talking to himself. (This is wrong because him is not I, therefore my self is not him.) So... this is supposed to be the correct question: Don't you think you are the only one who are thinking about them? Remove the -self part. "You" is not "them." They are separate entities, or "selves." Just remember the pattern, when using the -self suffix, subject pronoun = pronoun + self. Also, with a plural pronoun, -self becomes -selves. Hope this helps~!

Could you please correct my essay?

Task Question, some people work for the same organization all their working life, others think that it is better to work for different organizations. Discuss both views and give your opinion.
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Although some people believe that it is better for people to work in the same organization all their entire life, others disagree with this opinion, as they argue that working in several institutions during their career has more benefits. This essay will examine both sides of the argument and present a final conclusion.

On the one hand, those who are in favor of working in the same organization explain that there are many positives that could result from this. Primarily, it gives them the opportunity to gain more experience in their specialty specialized field. Furthermore, it is also a better chance for them to get promoted and reach a higher position, and, hence, more social status. For instance, some organizations such as public schools promote the teachers who have been working in for them for a long time.

On the other hand, others believe it is more beneficial for people to work for different organizations for several reasons. Firstly, they could gain well-paid jobs in other places. For example, teachers who are working for public schools gain less income than those who are working for private schools. Secondly, workers could make new relationships and meet new people in other places. Thirdly, some organizations are better than others in terms of quality so people who want to boost their skills could change their work place in order to get more experience in their field. Finally, the world has become open market for work, thus terms like where the eldest should take the highest position has no longer been significant.

Considering both points of views, in my opinion, the advantages of working for several organizations outweigh the benefits of working for the same organization.

It's a very good opinion essay! There weren't lots of mistakes and your ideas are well-presented. Good job!

Hope this helps~!

[Can] is used to express details that can become possibly true. [Might] is used to express details that are hypothetical/speculative (When you see this word, assume that the sentence is not true). Although for your example, the sentence is grammatically wrong because when you say "as good," it should be "as good as." This is used when comparing two things that are somewhat similar. source: https://dictionary.cambridge.org/grammar/british-grammar/as-and-as-expressions/as-as For your given example, it makes more sense and it's more natural to read the first sentence: This camera is a bit cheaper than the other one, although it might not be as good as [noun/pronoun], of course. (I think it's more natural to just say "might not" instead of "mightn't.") [In this sentence, the camera PROBABLY (meaning it's not sure) isn't as good as the other object being compared to.] The sentence is also grammatically correct, but if you use "can't" instead, the meaning will change. This camera is a bit cheaper than the other one, although it can't be as good as [noun/pronoun], of course. [The camera is REALLY NOT as good as the other object being compared to.] Also, maybe you can get confused because in spoken English, the object being compared to is often omitted. This omitting can be OK in spoken English, as long as the speakers know what they are talking about. Hope this helps~!

Both are correct. This will be more on your personal preference. Although, "likelier" in my opinion doesn't sound that natural as "more likely" is more common in spoken English. Example: It is likelier that I will not pass the exam. It is more likely that I will not pass the exam. John will likelier to be late due to traffic. John will be more likely to be late due to traffic. Hope this helps~!

Botox trend in Korea

Korea is well-known for an appearance-oriented society, which I think it’s so ingrained that it got to the point where it can be no longer changed. So there are a bunch of plastic surgery clinics nowadays (I don't think there's any grammatical errors in this sentence but it's better to add a time period for it to be easier to understand.) and there are even a few famous areas for plastic surgery. If you decided to use public transportations transportation ("transportation" is an uncountable noun, so don't add -s), you can see a lot of advertisements to encourage (For this case, this is still happening, so the verb tense must be continuous) encouraging people  to have plastic surgery. In the subway ("subway" is a noun that requires a determiner), it’s common to see big billboards to advertise advertising (Tip: If you think it's still happening, conjugate the verb into continuous tense) their plastic surgery clinics. Other than this plastic surgery, there are also many different types of aesthetic procedures for looks. One of things is Botox (Botox is a proper noun, so always capitalize the first letter) and it has different kinds of treatments. For example, people get Botox injections to combat wrinkles or either erase or smooth their existing wrinkles. Not only people who are in their 30's (This is acceptable in casual writing but add an apostrophe if you will use this in formal writing.) and 40's but young people in their 20's are getting these Botox injections. On top of preventing wrinkles, there are different kinds of Botox for square jaws , cheekbone, calf muscle, forearms and belly, etc. Actually, (Add a comma after an adverb if it's the first word of the sentence.) you can get Botox injections into wherever you want. In particular, getting Botox into your jaw is really common because girls usually want to look like western people, having a (People tend to forget to add determiners before the noun because of adjectives. You can try to be more aware soon.) more slim face. Once you get this Botox, it usually lasts for 6 months, which means it’s not permanent so once you decided to get this injection, you should keep getting it on a regular basis. But there’s a flaw in this Botox as the more often you get, you start to have a tolerance towards it. I’m curious to (This verb needs a preposition after since you are referring to a specific topic. Alternatively, you can just say 1. I'm curious, if... 2. I'm curious to know if...) if we get Botox injections (When common nouns are being referred generally, change it into plural form), it will will it affect us physically later in our life? (When you're speculating or wondering about a possibility with the word "if," the second clause must be an interrogative clause.) I think it’s safer than plastic surgery as you don’t get it done with knife under the knife (There's an idiom in English called "under the knife" which means getting plastic surgery. If this is what you mean, then this is the proper way of saying the idiom. If you literally mean "knife," then add the determiner "a" before the noun.) but in the sense that you get medications that you don’t even know well.