When it comes to the college entrance examination, undoubtedly, most of us think it is important and that it will have a huge impact on your following lifuture.

Small grammar mistake. Saying "future" instead of "following life" makes it more concise and easier to read :)

Also, the sentence is a bit wordy, an english native speaker would say "Most people think that college entrance examinations (or exams) are important and that they will have a huge impact on your future."

Your sentence makes sense but I wanted to include a more concise way of saying the same thing.

But, in my opinion, it isthey are not as important as they thoughtpeople think.

I included "people" because you have to specify who thinks that these exams are important.

With the rapid development of technology and the internet, we have more chioices and changes(options, opportunities, possibilities) to achieve our dreams and become the one who youwhoever we want to be.

I wasn't sure what you meant by "changes" so I included a couple of words that could fit well in this sentence.
Also, you started by saying "WE have more choices" so you have to then say "who WE want to be"

Is my thought righreasoning correct?

You could also say: "Am I right?" or "Do you agree?"

Can you share your experience with me to answer my question?

If you say "Can you share your experience" you don't have to add "with me" because it's repetitive

Any experience is ok, no matter if it is thea successful one or a failed one.

I only corrected the grammar in your sentence. However, in english we would commonly say "no matter if it is a successful one or not." to avoid repetition :)

By the way, when I amfeel down, I always choose to listen to songs from OASIS, an biblical band.

Same here, I only corrected grammar but to sound more native you could have said "...when I feel down, I listen to OASIS, a biblical band."

By saying "I listen to..." people already know you're talking about a musical artist, so you don't have to say that you "choose to listen to songs".
I hope that made sense :)

When it comes to the college entrance examinations, undoutedly, most of us think it isthey are important and have huge impact on your followinguture life.

When talking in generalities as you are, we would normally use plurals.

But, in my opinion, it isthey are not as important as they thoughtpeople think.

With the rapid development of technology and the internet, we have more chioces and changces to achieve our dream and become the one whoperson you want to be.

Is my thought right?

It would more common here to simply say "Am I right? " or "Do you agree?"

Can you share your experience with me to help answer my question?

Any experience is ok, no mattwhether it is thea successful one or failed one.

By the way, when I am down, I always choose to listen to songs from OASIS, an biblical band.

When it comes to the college entrance examination, undoubtedly, most of us think that it is important and haves a huge impact on your following life.

But, in my opinion, it is not as important as they thoughtink.

With the rapid development of technology and the internet, we have more chioices and changces to achieve our dream and become the one who youwe want to be.

Not really sure what you mean by "changes" in this sentence. Maybe you could use the word "chances"

Is my thoughtinking right?

Can you share your experience with me to answer my question?

Any experience is okay, no matter if it is thea successful one or failed one.

By the way, when I am down, I always choose to listen to songs from OASIS, an biblical band.