As everyone knows, anime is a very popular Japanese form of animation, and the trend is that it’s just growing more and more popular.

(1) Anime is not an animation, but rather a form of animation. Here, "(an) animation" would be referring to a specific show: for example, One Piece is an animation, Naruto is an animation, Demon Slayer is an animation, but "anime" itself is the art form.
(2) What does it mean for anime to grow "more and more"? The phrase is incomplete: it's growing "more and more popular".

Particularly, in the nerd universe, it's one of my favorite things than i like.

"That I like" is redundant, since we're already told it's one of your "favourite" things, which, by definition, implies that you like it.

Who has never watched or doesn't know about Pokemon, Dragon Ball, Naruto, or One Piece,? It's almost impossible haha.

Your original sentence is ungrammatical and unnatural. I have rewritten it by turning the first part into a (rhetorical) question and splitting the second part into its own sentence. Do take some time to look over the changes.

When I was just a kid, Dragon Ball was my bestfavourite anime for a long time.

"My best anime" implies that you created it. The word you should use is "favourite". Alternatively: "Dragon Ball was the best anime".

At.

13 , I finally became a trulye nerd, and startinged watching a lot of anime; Rright now, Classroom Oof Tthe Elite and Oshi no Ko find itselfthemselves in a difficulty position on my list.

(1) "Truly" is an adverb, which means it should precede a verb. However, "nerd" is a noun, so the adjective "true" is expected instead.
(2) "Starting watching" is ungrammatical.
(3) We don't capitalise the word after a semicolon because it's still part of the same sentence.
(4) "Classroom of the Elite" is a title, and short prepositions and articles like "of" and "the" are not capitalised in titles.
(5) It should be "themselves" and not "itself", since you're referring to more than one anime.
(6) "Difficulty" is a noun. "Difficult" is the adjective.

I really don't know whoich I like more haha.

In this context, "who" is used when referring to people, which CotE and Oshi no Ko are not.

But, Llet's be honest, in the past nowe didn't hadve an official place to watch anime, we haved to watch ion sites suspicious and afraid to takesites and were afraid of installing a virus.

(1) "Not had" is not grammatical. The subject "we" is also missing. Alternatively: "in the past there wasn't an official place to..."
(2) Mind the tense. You're writing about the past, but "have" is in the present tense. Also, "have watch" is ungrammatical anyway.
(3) We typically use "on" with "sites", not "in".
(4) "Sites suspicious" is grammatical, but putting the adjective behind the noun is more literary and archaic construction.
(5) In my experience, "afraid to" is typically used when talking about something that is about to happen, while "afraid of" is more general and doesn't have this implication. In your sentence, the latter is expected.
(6) The phrase is "install a virus", not "take a virus".

And in this scenarioat moment, Crunchyroll happened to save us.

"Scenario" refers to a sequence of events, which we don't have here. I think "in that moment" is more appropriate and natural.

I've only used Crunchyroll for a smallhort time, but I really appreciate the experience.

(1) "I've (only) used" is what we call the present perfect tense. One of its use cases is when you want to focus on the present consequences of a past event. In this sentence, the present consequence is that you are less familiar with Crunchyroll, which contrasts with you saying that you really appreciate the experience. Hence, the present perfect is expected here.

(2) Adding the "only" will be more natural in this sentence, as you later used "but".
(3) We don't say "for a small time". Phrases we use are: "for a short time", "for a small period of time", "for a short while", etc.

With my friend, WeI watchinged To bBe Hero X and liked it so much, and the most impressive, thing is that the anime is completely original.

(1) In the phrase "with X, Y...", Y does not include X. If there are only two people (you and your friend), X+Y is "we", and X is "my friend", then Y should just be "I". Alternatively: "My friend and I watched..."
(2) It might also be more common and natural not to write "with my friend" at the start of a sentence: "I watched To Be Hero X with my friend and like it so much", but your sentence is grammatical nonetheless.
(3) Again, mind the tense. You're writing about the past, so the past tense "watched" is expected, though "we watching" and "I watching" aren't grammatical anyway.
(4) Be aware of title capitalisation rules. "To Be Hero X" is a title, and verbs like "be" are capitalised in titles.
(5) Similarly to (3), "like" should also be in the past tense ("liked").
(6) The phrase "is that the anime is..." must follow a noun, so you're missing a noun like "thing" after "most impressive". Alternatively: "and what's most impressive is that..."

But what about you?