I've tried using master yi/wukong/olaf always get fed, sometimes carry but I just can't win everygame with them. Im bronze 5 staying at 70-90 LP for 2 weeks almost now and I want to know an easy carry champ that can just anhilate enemy team when fed. I'm thinking volibear or rengar right nao but no too sure.
Have you tried actually getting better at this game instead of thinking some magic champ will carry you out of the hell you dug yourself into?
Find a champion you like and learn them inside out. spam them over and over again. Check my match history, Shen, Shen everywhere. Counter picking only really works in LCS, in low elo ranked its more about what your comfortable playing.
Udyr
In Bronze you just need to pick a champion, and play them almost every game. Doesn't matter who. I scaled out of bronze with Nasus, and carried lots of games. Stick with one champion and learn how to play against the match ups with that champion.
If anyone tries to tell you it DOES matter who you pick, don't listen to them. I have a friend that scaled with only Urgot from B5 to S4.
Try studying one champion and learn all the tricks to it
There are guides all over the net to help you
