LP SYSTEM

Hello fellow legends of the league. I have been level 30 for quite some time and was put into the bronze category for ranked. I think that the bronze league is a trap and acts like quick sand whenever i try to play ranked. Nearly every game i play there is either a feeder or an AFK player. What continues to shock me is that when these things happen, that i have no control over MY score and MY LP suffer. Why is it that when someone on my team leaves and the opposing team gains an advantage and wins, i lose LP. It doesn't make sense! i think the LP system should be based on individual success. (Especially for solo que). What i mean by this is that a person who loses a game but had 30 kills and 4 deaths shouldn't lose LP because they obviously do not belong in the pool of players they are playing with. Players should be able to gain LP no matter what the other people on their team do because they are unreliable and their actions should not have you held accountable. What do you guys think?