There will no doubt be toxic people in every game.
Imo, Blackshot and LoL (the 2 games I mainly play) has the most toxic community.
In LoL, lower elo, there will be people who think they deserve higher, and make the experience bad for their team. Same with higher elo, everybody think they're gods who never make mistakes. But of course, it's not all bad.. There will be people who tries and lifts the morale up for the game by saying encouraging things, and people who just remain silent
I guess, if you're really affected by toxic spams in MOBA games, it's best to mute them. Although the downside is not being able to communicate as a team.
For FPS, Blackshot is notoriously famous in SEA for being one of the most addictive and unfair fps game possible. Why? It's literally a pay to win kind of game. In CS, money is spent on skins, which offer no significant difference in terms of game performance. Blackshot, however, has enhanced stats. People buy these guns, and naturally they're going to kill people much more effortlessly as compared to normal guns. They then think they're so good in the game and start to look down on people. Not to mention, hackers and spamming the lobby is making this much more unbearable.