Kuwagata Nano is an Australian vTuber girlwoman who sings in Japanese even though she doesn’t understand Japanese.

When I first visited her live stream, she was yelling at a viewer in the chat.

Your sentence isn't incorrect but this is a more natural way to say it in the US.

I remember that I said in chat at the time, “I love your style of chat moderation style!” in the chat then.!”

I simply thought she was a feisty and interesting streamer at first, but I gradually found out that she was a really nice person whilen I visited her live streams and joined her discord server, etc..

RThe relationship between her and her community is interesting.

As I said before, many streamers always act nice like, “I appreciate you!

On the other hand, she yells at the chat sometimes as when I first visited her live stream, and viewers often say things like , “You deserved it!” when she screweds up in a game.

According to my son, we can personify chat.

However, tThey trust and care for each other, actually.

She puts effort into communicating nicely with viewers even outside of her live streams.

Recently, I can’thaven't been able to visit her live stream because of the time zone difference, unfortunately.

I got to know about her, because she collaborated with one of my favorite streamers.

No need for a comma here.

I thought that she was interesting, because many streamers always try to be nice.

No need for a comma here.

I remember that I said to her, “I love your chat moderation style!” in the chat then.

You need to specify who you are saying something to here.

I simply thought she was a feisty and interesting streamer at first, but I gradually found out that she was a really nice person w. While I visited her live streams andI joined her discord server, etc..

This sentence is way too long. You need to break it up into at least two seperate sentences.

RThe relationship between her and her community is interesting.

This requires 'the' at the start of the sentence.

As I said before, many streamers always act nice likejust to say “I appreciate you"!

Sounds ackward, needs to be reworded. The exclaimation mark needs to be closed at the quotation.

I love you, audience!” and their communities are like “I love you, I will support you, streamer!”

Don't really understand what you are trying to say here, maybe a rewording is in order.

On the other hand, she yellsed at the chat sometimes as when I first visited her live stream, and viewers often sayid things like “You deserved it!” when she screwed up in a game.

'yells' is the present tense, should be 'yelled' for the past tense. The same for 'say' and 'said', one is present tense and the other is past tense,you are speaking about the past but using present tense grammer.

However, Actually. they trust and care for each other, actually.

This correction sound a lot smoother.

She puts effort into communicating nicelybetter with viewers even outside her live streams.

'Nicely' really doesn't fit here, use better.

Recently, I can’tUnfortunately, I was unable to visit her live stream recently because of the time zone, unfortunately difference.

vVTuber - Kuwagata Nano

The 'v' in VTuber is always capitalized.

Kuwagata Nano is an Australian vVTuber girl who sings in Japanese even though she doesn’t understand Japaneseit.

Using japanese twice is repetitive in this sentence.

I got to know about her, because she has collaborated with one of my favorite streamers.

'I got to know her' is a phrase but it is strange to use it with about.

I simply thought she was a feisty and interesting streamer at first, but I gradually found out that she was a really nice person while I visited her live streams and joined her discord server, etc..

RThe relationship between her and her community is interesting.

On the other hand, she yells at the chat sometimes aslike when I first visited her live stream, and the viewers often say things like “You deserved it!” when she screwed up in a game.

Actually, it’s nicer than others’ in my opinion.

Others is also a plural ownership pronoun.

I am not that active in her community, but still I can tell that much.

I added 'much' to sound a bit more natural.

Recently, I can’t visit her live stream because of the time zones, unfortunately.

Her stream completely overlaps with my sleeping schedule.

Kuwagata Nano is an Australian vTuber girl who sings in Japanese even though she doesn’t understand Japanese.

Your sentence is grammatically correct, but here is a slightly more natural way to say it:
"...sings in Japanese despite not speaking it."

I got to know about her, because she collaborated with one of my favorite streamers.

I remember that I said “I love your chat moderation style!” in the chat then.

I simply thought she was just a feisty and interesting streamer at first, but I gradually found outover time I came to learn that she was a really nice person whileas I visited her live streams and joined her discord server, etc..

"find out" describes an instantaneous revelation. Your realisation was "gradual" so "find out" isn't appropriate here.

RThe relationship between her and her community is interesting.

I love you, audience!” and their communities are like “IWe love you, Iwe will always support you, [streamer]!”

However, theNonetheless, they actually trust and care for each other, actually.

Recently, I can’thaven't been able to visit her live stream because of the time zone, unfortunately.

Her stream completely overlaps with my sleeping schedule.