Cheated out of Placement Game

I won 9/10 of my placement games. Problem is, I only played 9 games.

My 1st game was my return to League, when the game updates, it "fixes" changed files so I was no longer in windowed mode. Which means, I got the black screen of "not compatible with this resolution" or whatever the fuck it says.

The few minutes of time it took me to Alt + F4, go to game files, change the windowed mode value from 0 to 1 then restart the client and enter game was already enough time to request a remake and mark me as the leaver.

You used to be able to adjust video games visual settings from the client, something I could check after each update before starting a game. Now I have to go to freaking practice mode just to make sure I'm not going to be the AFK guy when I jump into a match.

I was put into low priority queue for like 3 matches (20 minute wait, very ridiculous).