Placement matches

Hello, I am wondering if anything can be done about my placement matches. I am five games into placement however I ran into the problem of people who decide to make the game unfair for others. Two out of Five of my placements were an instant loss because there were people who decided it was okay to ruin the game. One game someone decided to run it down mid causing the enemy team to win lanes and get fed faster. The next game a player decided to tank his own elo (I looked him up and he has been intentionally trolling to lose), making it unfair because we were forced to forfeit. These two losses are completely unfair and I would request something to be done, thank you.

*(I also saved evidence of these players)