Imagine a hockey game where all 10 players are blindfolded. People bump into each other, skate into walls, lose track of the puck, shoot in the completely wrong direction, and just generally do an awful job.
You're one of those players, and you want to start winning. Someone suggests that you take off the blindfold. You explain that even if you could see, your teammates would still miss all of their shots. Well sure, but regardless, shouldn't you take off the blindfold? Ah, but if you tell your teammates to pass to you, they still end up passing to someone else or passing when there's someone in the way. Well yes, but even so you're massively better off without that blindfold. But, but, but I bet there will be times when it'll be really difficult to make a shot from where I am, so it's like do I try to make the shot myself or pass to one of my blindfolded teammates since either way I'm sure it's going to fail. INSTEAD OF WORRYING ABOUT IT, JUST TAKE OFF THE DAMN BLINDFOLD!
It doesn't matter if you try to carry or try to work as a team as long as your skill level is still Bronze. Improve yourself. Don't worry about specifically how you'll do better once you're a better player. Get better, and it will become obvious.
If you've ever watched a Challenger smurf in Bronze, it really is like watching someone play hockey with blindfolded people. There are tons of things that that person is doing that you're not. They have map awareness. They have game knowledge. They can cs. They can land skillshots. They know their damage capability. If you just start doing all the things they're doing, it won't matter whether you carry to victory or shotcall to victory. Everything you do will get you closer to victory.
There is a difference between "I want to climb" and "I want to get better." If you feel that you're already better than Bronze, and your teams are what's holding you back, you're only asking how to climb. You're keeping the blindfold on.