I finally did it. I had to turn off pings.

Too many times during a teamfight, I'd be waiting on cooldowns, when a dead teammate or someone who isn't even there begins spam pinging someone who is at 50% life - my immediate thought is that it's the guy who is nearby and low but has CDs, but it isn't, it's the rager who got blown up and doesn't care I don't have any CDs or mana, and I get killed, followed of course by "?" pings from the same guy, more often than not a Yasuo main.

Or just the constant "?"s in general from the thousands of toxic, crappy players in low elo. People use pings to be toxic and rage far more often than to ping anything useful or strategic.

Between that and an automatic /mute all at the beginning of every single game, it's actually greatly improved my gameplay, and maybe I'll get to an elo where people stop pressing random shiny buttons because they make funny noises and filling chat with as much flaming and racial slurs as possible.