I have many italki friends.

I have many friends on italki friends. 
Our ages and countriesy are different. 
We're used different languages.
However, we all want to learn another language.
There is still a lot of Aawkward use of language is still a lot.
However, working together we will improve day by day one day is better. 
All of us fighting!^^

Please tell me if the last correction is what you meant to say.  It means a little bit of improvement each day. If not, I can help find another way to say what you mean.  파이팅! (Is that how it is spelled?) ^_^

I have many italki friends.

I have many friends on italki.

I have many italki friends.
Our age and country are different.

Our ages and countries are different.
We're used different languages.

we use different languages. 
However, we all want to learn another language.
Awkward use of language is still a lot.
Awkward usage of language is still a lot. 

However working together will improve one day is better.(In fact, this sentence doesn't make sense. I think there can't be two verbs.)
All of us, fighting!^^

Hello! My friends. I'm learning Korean now. I'm pretty interested in traditional Korean culture. I hope we can work together and help each other! Thank you!