Why do I like to read?

This is what's called a wh-question:

https://dictionary.cambridge.org/us/grammar/british-grammar/questions-wh-questions

Since you don't have an auxiliary verb like "is" or "have", you need to add "do".

How did I caome to like to reading?

Again, since "how" is considered one of the "wh-" question words (even though it doesn't start with a "w"), you need to add a form of the verb "do" (here it's "did").

The repeated instances of "to" in "come to like to read" sound a little odd. It's better to use "reading" instead.

The reason was that I was very introverted as a kid, a had like 2. I only had about two friends, and that was inat my old school, so when aI transferred, there was no one that I knew at the time.

It's better to spell out numbers (such as "two" instead of "2") when they're small (especially lower than ten) or at the beginning of a sentence.

I was mostly alone inat lunch time and, but then I remember finding outed that my school had a library so. I went there to pass the time, since I didn’t like to eat at school and I was embarrassed to stand in front of my classroom alone with everyone else looking at me.

This was a run-on sentence that needed to be split up.

Why would you be standing in front of your classroom at lunch time? Wouldn't everyone be sitting?

That wasould have been awkward. [?]

Did you end up standing in front of the classroom? If so, then you should say "was". If you didn't, then you should say "would have been".

So thereThere in the library, I discovered a whole new world.

Given that it's been several sentences since you mentioned the library, it's better to call it "the library" rather than "there". Also, it's better to use "so" only when you're indicating a consequence of something introduced immediately beforehand.

But lLike any other kid, I was most interested in fantasy and romance books, not the classic ones which later on we hadwould have to read whether we wanted or not.

"But", which indicates contrast, doesn't fit very well here. It would if you had said something like this:

It had a good amount of books, including classics. But like any other kid, I was most interested in fantasy and romance books, not the ones which later on we would have to read whether we wanted or not.

So I spent the rest of the year during my lunch break, reading lots of booksreading lots of books during my lunch break.

"So" doesn't really fit here. Also, I changed the order of the parts of the sentence so that it would make more sense.

And I liked it sovery much.

"So much" suggests that you're going to mention a consequence (for instance, "I liked it so much that I decided to do it all the time").

And II've liked reading until these days, even though aever since. A couple of years ago I stopped reading and It made me, but I missed books so much that I recently started again.

I recently started again and I hope I read much more than I read before.

Well, when I transferred schools I made hardly made anyany new friends.

The reason for this was that I was very introverted as a kid, a. I had like 2about two friends and that was in my old school, so when aI transferred, there was no one that I knew at the time.

I was mostly alone inat lunch time and then I remember finding out that my school had a library so I went there to pass the time since I didn’t like to eat at school and I was embarrassed to stand in front of my classroom alone with everyone else looking at me.

You could break this into shorter sentences but I like it fine as it is too.

So there, I discovered a whole new world.

But like any other kid, I was most interested in fantasy and romance books, not the classic ones which later on we had to read whether we wanted to or not.

And I like reading until these odays, even though a couple of years ago I stopped reading and Iit made me miss books so much.