Teamfight Tactics MMR is broken.

Hello, i wanted to bring to attention to te MMR problem regarding TFT.

from what i discovered it just sees 1st place wins will boost the MMR and 2nd 3rd and 4th is not going to boost MMR. whenever i got a 2nd 3rd or 4th place win the win rate on lolchess.gg would go down, and my wins would not increase, which i noticed happened in the client as well. I think that this is the only reason why my LP gains and losses are so extreme at the moment; the game thinks i got a 10% win rate in plat so it is trying to force me to drop rank to where i "belong" and i know of no ways to boost my MMR aside from 1st place wins.