Rank climbing

So riot thinks it's okay for the ranking system to be what it is. Where when you lose a game in bronze you lose more then you gain, and it doesn't matter how good you are between all the trolls and people that go afk you end up losing about half your games. At least in my case 1 out of every 3 games I play someone afks and it's almost a guaranteed a loss. I'm not saying I could be a challenger or even diamond, but i know i'm good enough to at least be silver, but between all that and some people that should never even play ranked I get stuck with them. Also you do all the grinding to get out of 1 rank and still end up with people beneath your own rank like honestly if riot would cut that out you would get rid of 90% of trolls and afks. I'm sure there are gonna be post on here were if you were good you could just carry your way through and in some cases you can, but last i checked this was a team game and riot has built the entire thing around that I don't care if your a player of fakers level there is no way to carry if at 10 mins of your game your team is down 10 kills to 0. I have literally had so many games like that as a jungle to where i'm not even lv 6 and the other team has destroyed 2 of the lanes. So riot you need to fix the point gaining system in low elo because gaining 12 points in bronze 4 for a win and losing 20 is just retarded.