Team balance

So I started with bronze 4 and got to silver 1, no problem in 3 weeks. I wasn't playing much, It was really easy, but when i got to silver 1 things got different. Every single game there is at least 1 player 1/7 or worse. I main mid and always win it, so i start roaming. I gank bot, we got some kills, I go back to mid and start pushing but every single lane starts losing, even jungler is dying by getting camped by other jungler who is much better. Last game I played katarina. Game started nicely, but like every game everyone feed. Final team score was awful. Without me on my team score was 5/34, when my score was 11/5 and I was the only one playing good. It's all ok I say next game will be good, I will get a good team, BUT NO EVERY SINGLE TIME at least 2 players are feeding, feeding hard ! I don't know what to do anymore should i really play with 2 other premades, because im feeling like it's inpossible to carry like this. Some advice please ! Thanks !