Hi. Well done on the entry, it works very well. I made 2 versions, you can take your pick which one is better.

Word changes:

Currently, job hunting in Japan has started. This is strange that I have to find a job even though I still have 2 years until I graduate. The Government says that this system helps to decrease the unemployment rate for young people. However, if I couldn't find the job until I graduate, it would be very tough to find the job later. Since this reason, young people concentrate on job hunting rather than their university work. How do you feel about this fact ?

Word and grammatical changes:

Currently, I have started job hunting in Japan. It is strange that I have to find a job even though I still have 2 years until graduation. The Government says that this system is to help decrease the unemployment rate for young people. However, if I couldn't find a job before graduation, it would be very tough to find a job later. Because of this reason, young people concentrate on job hunting rather than their university work. What do you think about this fact ?

Changes in order:
1 - Currently was spelt wrong.

2 - I believe that you are talking about your job hunting so it is important to state that.

3 - Japan is a noun and should have a capital letter

4 - Grammatical change

5 - 'the job' talks about a single job possibility, 'a job' refers to many job possibilities

6 - The word 'till' is acceptable in speech but is not good for text. The original word for 'till' is 'until'.

7 - 'graduation' is the name of the event. 'graduate' is the verb.

8 - Use 'The Government' as there is only one government you are referring to.

9 - 'says' or 'said' us the past tense of 'say'. The Government made the comment in the past, so use past tense.

10 - Grammatical change

11 - Read 5

12 - 'before' is a better term to use as you will be able to use the noun graduation making the text more fluent.

13 - Read 7

14 - Read 5

15 - The fact in this sentence[S] is dependent on the reason of the previous sentence[1]. 'this reason' refers to the fact[1], 'because of' says the following fact[3] is due to fact[1]

[1]Fact sentence[1]. [S]Because of this reason, [3]young people concentrate on job hunting rather than their university work[3][S].

16 - 'their' is a term used to show ownership. 'That is their hat.'

17 - 'What' is a better term to use for this question as it works with the verb 'think'.

I would say that 7/10 times, 'what' can be used with questions meaning it can be a useful default if you are unsure but sometimes it is good to try new question openings [How, Where, Why, Who,].

Sorry if some of this explanation is confusing. Feel free to message me if you want further explanation on any information.