Can we fix the matchmaking system?

It needs to take into account KDA ratios...this is getting ridiculous. I'm getting pretty fed up with mid and top laners going 0/40 and then flaming the other players who have maybe 3 deaths for "doing nothing". They clearly have a lesser understanding of the game and think you must fight at every opportunity or you're "doing nothing". They clearly lack the reasoning to tell if an enemy is much stronger than them, they need a much smaller MMR. Oh, you hit your stun? Remind me again why im supposed to go in when theyre 100 time stronger