Just love trying to get in a ranked q

The jungler starts whining about wanting mid. I knew based on his erratic behaviors I probably should have dodged. We get in game and sure as fuck the dude starts raging and saying gg after 1 person dies. Meanwhile he was the first one to die afk in his jungle tabbing out to put on music. Then someone does something he doesn't like and he announces in chat "I'm going to make you lose now hahaha" and then he waits til the 20 minute mark to ff, when we vote no he basically says bye! and leaves, which isn't even fucking marked as a player behavior issue but as a fucking leaver buster. I can't enjoy your game at all anymore. These people shit all over your system and they know it doesn't work unless it's something verbal.

Basically people are so inherently deranged trying to get a stable population of teammates is borderline impossible, which makes matchmaking way less accurate, considering a player can just fuck it all up on a whim. I get that you want this to be a team game and all that crap but seriously I have to be better than fucking diamond 1 just to win a silver game if someone chooses to just have a bipolar fit.