Play Daily chess instead.
why are blitz players here so angry?

Play Daily chess instead.
I don't much like Daily chess. I mostly enjoy OTB but you can't have that every day. I enjoy good blitz games, just not the angry brainless ones.

Up to you.
... but if you really do want to "think and produce a beautiful game", you can't beat Daily.
A Heroic Defense in the Sicilian Najdorf - Kids, don't try this at home! - Chess Forums - Chess.com

1500 talking about producing a beautiful game when as a 1900-2k half my slower games are decided by a random blunder o.0

A lot of blitz players here are playing angry chess. They make instant moves without even thinking and if you win against them they will spam you for a rematch. I usually don't give them a rematch because i know what happens if i do, they start playing even more angry chess and agressively pushing pawns in front of your king as if they want to either win or lose in 20 moves and be done with it, literally as if they hate the game of chess but keep playing it daily because of habit. Sometimes i even get carried away by their own anger and start playing brainless moves as well to keep up with their insanely fast time management. Then i go to their profile just to check what i already know, that they have 30k , 50k or even 100k blitz games played. Why are they like this? This is the thing i hate the most about blitz here, people only wanna play brainless instictive speed chess instead of actually think and produce a beautiful game.
You can try a longer timer. When I was younger, I liked to play a lot of 15+15 and 20+20.
It took much of the "rush" out of the game and brought the thoughtfulness back into it.

I don't think they are angry, there just isn't enough time to make thoughtful moves unless you are near master level. The fastest I ever play is 5 + 5 and even that feels like a rush. In a 3 minute game I am literally making random moves just trying not to flag, I don't know how people do it.
A lot of blitz players here are playing angry chess. They make instant moves without even thinking and if you win against them they will spam you for a rematch. I usually don't give them a rematch because i know what happens if i do, they start playing even more angry chess and agressively pushing pawns in front of your king as if they want to either win or lose in 20 moves and be done with it, literally as if they hate the game of chess but keep playing it daily because of habit. Sometimes i even get carried away by their own anger and start playing brainless moves as well to keep up with their insanely fast time management. Then i go to their profile just to check what i already know, that they have 30k , 50k or even 100k blitz games played. Why are they like this? This is the thing i hate the most about blitz here, people only wanna play brainless instictive speed chess instead of actually think and produce a beautiful game.