How to get out of Plat on solo/duo
Hello everyone. I play on EUNE and I've been stuck in Platinum for as long as I can remember. I main top lane, primarily I play tanks but I can play all sorts of champions. Thing is, no matter how well I play I simply can't progress more than plat 2-3. I often lose games where I play really good. For example, yesterday I had a great start on top I was 4/0/0 as Olaf during laning phase and enemy Shaco (jg) was 1-10-2 at the end and he won the game. I try really hard to win, I even encourage people after a mistake and try not to flame, but often it is just not enough. I'm just tired of seeing people whom I've basically destroyed on the lane, write ''ez'' as their team carries them. I've played tournaments and I am pretty certain I can handle Diamond players really well, but I would really like to progress more. My question is, are there any tips you can give me? What champion do you think is the best to get out of Platinum? Any sort of feedback is welcome, thanks!