WhatThe kinds of TV shows and movies dothat I like to watch?

Just a suggestion for if you wanted the title to not be a question

Well, I don't usually watch any TV show neigther movies, the reason is thats or movies because I'm "addicted" to yYoutTube,. I like it because it's more natural and I can listen to podcasts, watch people playing games I like, etc.

If anything, you would have “nor” between “TV shows” and “movies”, and “neither” before “TV shows”, but I don’t think they would be used in this case.

The sentence is a little long, so you could either use the above suggestion or say “Well, I don’t usually watch TV shows or movies. The reason is that I’m “addicted” to YouTube, as it’s more natural and I can listen to podcasts, watch people playing games I like, etc.”

You should capitalise YouTube, especially if it’s in a more formal situation (but if it’s just in casual situations, you can just leave it how you originally had it).

You have to use “to” after “listen” when you’re specifying what someone is listening to.

However, my girlfriend recommend med a series called “The sSummer I tTurnned pPretty” to me.

This happened in the past so you would say “recommended” (past tense).
You would need to say “to me”, and I prefer having it at the end.
You should capitalise the title of the series and put it in quotation marks to make it clear what the name of the series is.

It's been one of the worst things I've ever watched haha.

If you’re still watching it, then you can use “been”.

You could also say “it was” instead of “it’s”, but there’s not really much of a difference in meaning.

The plot of the series is basic,; Belly, who is the main character, loves both a boy and his brother and she isn't sure of who i’s the best.

I think you should either use a semicolon or colon instead of the first comma.
You could also say “the main character, Belly, loves…”
“Of who is the best” is still ok, but “who’s the best” is shorter and I’d say also more natural.

I wasn't ablecouldn’t even watch two see even two chapters,episodes/seasons because it was awful.

“Wasn’t able” —> “couldn’t”
“Wasn’t able”, to me, sounds more like you didn’t have the chance, rather than making the decision not to watch any more of it.
“Watch” and “see” have slightly different meanings. You should probably do more research beyond what I’m saying here, but I think “watch” really emphasises the idea of paying attention to what you’re seeing, whereas “see” is more just like a glimpse (or could be used to just say that you’ve seen a movie or a series, where you’re not expanding on how you found it).
“Chapters” is used for books.
Do you mean episodes or seasons? Seasons consist of multiple (typically at least 8) episodes, and episodes are like the individual videos.