Ranked Climb

As someone who wins his lane most of the time, contributes to helping other lanes, and tries to keep the team positive, it seems difficult to climb out of silver. If I'm mid...then top or bottom feds. If I'm top...then mid and bot feds. I can't play every lane. I am sure there are many other players out there that are having this same problem. I think RIOT should base how many points you lose based off of how well you play and what your grade is at the end of the game. I've lost and come out with S ranks and lost so many points making it hard to get out of silver. Something should be implemented to help out players who do well but lose due fed other lanes or a lack of jungle presence!