I looked up your stats and honestly i would not worry about your teams. i can see you play Janna well but none of your other champion performances really stick out. your average CS is fairly low so what i would do if i where you is just work on that, Practice cs'ing and last hitting/orb walking. Not a single champion you play has a 200+ cs average, and warding is not all you need to win, farm plays a huge part in it. Watch some of the lcs games most of these players are already around 200 cs at the 20 minute mark. Instead of looking for kills just farm. Another thing is you have played a LOT of champions but don't seem to main any particular. Champion diversity is okay but i wouldn't play more than 3 per role. You know what they say, Jack of all trade but master of none. if you get really good at a hand full of champs mechanically your feeding/trolling team will not matter you WILL be able to carry that dead weight. Trust me i carried myself to silver from bronze 5 as a support main in literally 4 days after doing terribly in my placements this season, and season 4 climbed b5-s5 in a month. If you would like you can send me an friend req and we can play a few games and see if we can figure out ways for you (hell maybe me too im no expert) to improve.