Honestly, needs a better Loss Prevention System

There needs to be a better way loss prevention are handed out. Because its getting ridiculous. I just now got out of a game right now. That quite literally within the first 20 seconds of the game starting 3 people say in the chat.

"Oh by the way, I have to leave in 5 minutes." "Me too" "Same"

They PURPOSELY started up a ranked queue. They leave the well, and enter the lane so that the remake option does not activate. And then proceed to leave the game. after the first minions appear so that the game doesnt give loss prevention.

The people on my team said "just push down mid and end it quickly"

To which the enemy team says

"No we have to wait until 15 minutes so we can get LP."

And here I am losing 17-21 LP per match because of shit like this.

Honestly. How am I expected to do Ranked Solo and get people who work together to ruin the game for everyone else?

3-4 people Afking and Leaving the game on a single team? Wtf.