Was just about to post the same thing. Done 5/6 games today solo queueing on faceit. I've had captains resigning after being 3-0 down, tking and griefing, and constant toxic talk, even from losing the knife round. Even if I top frag, it didnt stop the bottom one calling me a noob, just because I was the random. Horrible experience.
I guess this is why people recommend ESEA over things like Faceit.