In OP's defense,
I'm a major proponent for knowing how to play before you play specialty leagues... If a player goes 0-0-15, it's inexcusable. You need to go back to MM until you're at least almost out of NOVA.
That would equally infuriate me. It's a team-based game. When you're solo-qing, nobody is here to carry you. Contribute or go play WoW. FPS isn't for everyone. And even if you argue it is, there's causal / custom servers for MUCH of the CS community. Again, there's no reason for it. "bad" game or not. I play literally 4-5 matches a week with my schedule and I still always top frag.
It actually is the bad player's fault for playing before they're ready to play at that level, clearly. That said, OP pointing this out in-game should not be viably reportable. Give your head a shake.
I feel for you, OP.
People will report u if u lose even if u werent toxic
System is actually stupid af. People que premade with 1 or 2 friends and just report someone if they dont like him no matter if he is toxic or not.
this will be happen if you soloq, cuz if the premades dont like you - you'll get banned