What do you think of my recent lose streaks? From Diamond to Gold

Yesterday from Diamond 3 fell right straight into Gold right now. Insane lose streak with like 15% winrate. Intersting part is that I was doing just fine at Diamond, and I always immediately stop playing for a few hours if I lost 2 games in a row. The match quality became worse if I keep playing after losing.
Two days ago I decided to tried play more games in one day without stoping, no matter lose or not. Guess what? the more I play, the more I lose.
DukeBavaria's Marvel Rivals Match History - Marvel Rivals Tracker

It feels like there is a strange mechanics aside from Elo, reset every few hours.