there is only one solution: F1
lv8 - like 2500 elo lv10 is all at a very similar level he probably thought since he was in a lower elo game that he was the best player and had to bait to win. Players get egos too quickly in cs and start playing stupidly instead of playing for the team.
Dude instead of doing all this complaining just get some friends and play with them it's not rocket science.
people in faceit only care about k/d and not teamplay .
I'm in exactly at the same spot as you, 1 out of 3 games i play with or against boosters and they all are surprisingly bad. there's one tactic that i developed over time that is to simply shut everything down. it comes a certain stage in a match where you already tried to organize things, you already tried to reason you tried everything you could, but still, someone doesn't want to play ball and you're getting rekt.. well, mute everyone, put on some nice low music if you want, clean your mind from the tilt and casual tha fuck out of the game
hope this helps