In case this is not a joke:
Change your attitude. You are the only constant in your game, not your teammates. The only thing you can change is you. So you need to see what you can do better. As my swim coach always said, "if you believe you did the best you could possibly do and have no way to improve, than you just gave someone else the opportunity to get better than you." If you are losing a shit ton of games, than perhaps you are doing something wrong. If you take all the kills and starve your teammates, than no wonder your team loses as soon as you die. It is a team game. It is not all about kills either, its about objectives and cs. And if you decided to all in the enemy team only to have your team not follow up, don't blame your team when they don't follow up the next 5 times you do it. You need to learn to adapt even if your team is full of retards (not that they necessarily are).
TL;DR: Stop acting like Kaceytron, It is mostly your fault you aren't climbing. Now learn how to get better.