Why are people toxic?

my guess is that they have more games into a certain champion than the others. they main Yasuo,riven,Vayne,Draven,Zed, and more champions. Think they're better than everyone else Dive in first and call the team useless for not following Spam mastery 7 when they get a kill like everything is an outplay start roasting feeders that actually try to play like literally try think they're the leader and can do whatever shotcall they want. Call everyone that has a bad kda bronze 5 or just bronze when they have a mmr that would get them way past silver which is the reason why they're playing with you and the reason why you play with them. (gold elo and calls a gold 5 bronze when it's silver 1 to gold 1 elo...) Now before you start breathing heavy and spitting out some of your mom's spaghetti Note: i like toxic people as long as they can carry but i hate, HATE people who are fit into that list above. These are just my choices and i hope you can share yours and also "?"