Ranked System Needs Fix

Okay I've been playing a lot of ranked recently, I'm not that good i'll admit it, but I'm stuck in Bronze III and I feel like I shouldn't be. I have done really good in some of my games but still lost so I lose LP and eventually get demoted... This is really frustrating especially when I take into account that most of the times it's not my fault. Ultimately in the end I can take blame for the loss, yes. It's a team effort and I failed to support the team in the end and so we lost. But when I finish a game as Kayle Top, 7/6/16, and lose, and then get demoted from Bronze II to Bronze III, I just feel cheated... I played exceptionally well in this game but I still lost and still got demoted. So here's my proposition. What if, and this can just be for lower ranks like bronze, instead of giving LP for winning, you gave LP for how well they did in the game. Not only I experience this I have many friends who are stuck in bronze because they keep getting paired up with "bad" teammates. So my proposition is to give LP out depending on how well they did in the game and not hinder them to their teammates who they will probably never speak to again. If a man goes 16/3/8 and loses, he will still lose a lot of LP when you and I both know it was not his fault that they lost.