The most toxic communities I know of are the Genshin community, Payday 2, FFXIV and source games communities in general.
I quit 1year ago after 5y of dealing with it. Helpeful in random content, sure, daily and stuff. But if we talking about extreme, savages, ultimate, then the toxicity spill like diarrhea. Friendly community ends as soon you step in a serious fights, and becomes a game you want to play only with close friends because of this.