About to punch a hole through my monitor. Please talk me out of it

Just played a game where we had a clear victory but our katarina could no keep her mouth shut and kept flaming our Nasus to the point where he buys 6 Doran’s shields and runs it down mid. We could have won the game so easily as we had baron and 3 dragons and most of us were fed but the toxic idiots ruined. I lost 17 lp for that. I reported both of them but I gaurentee they won’t get banned and I will because I got reported for saying one thing in chat all game and that one thing was: “Please just stfu and play the game and quit talking in chat this is an ez win”. Legit I’m about to punch a whole through my monitor into the wall because I am sick of these people running games and I’m losing lp for it.
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