Improve my behavior

I myself, am not a toxic player. I don't constantly ping someone doing poorly, I don't call people names for screwing something up and causing us to lose, I say gg at the end of games even if I lose. I'm a pretty happy player most of the time.......

UNLESS

I start getting flamed for something that really isn't my fault (or maybe it was but my ego won't allow it to be)

After I start getting flamed, I start to defend myself (or rather, retaliate due to my OVERBEARING 'BEST-PLAYER-EVER' Ego) in a manner that really is just something that puts me down in the game, after the game, and in future games where the player that was flaming me is no longer apart of.

I tell myself before games , "OKAY, NO FLAMING THIS GAME!!! YOUR EGO DOESN'T MATTER!!!!!" But I forget about 10 seconds in when bot flames top for having the wrong keystone (or something.. you all know the deals...)

Anyways, I'm just posting to ask for ideas or if you have a similar issue you've overcome yourself as to how to better deal with not adding to the toxicity in a game. (if you have anything beyond muting their pings/comments)

Help is appreciated :)