I'm convinced getting out of Bronze is entirely lucked based. You have to hope that your teammates are better than the enemy more times than not, otherwise there is nothing you can do. All this stuff that high elo people say about not blaming teammates is patently false.....to a certain extent which I will get into.
I had a game yesterday that cemented this fact in my mind. I was doing well. I got pretty fed had good cs, hit my powerspike. I could effectively shut down anyone on the enemy team at will. We even had a fed Rengar who was killing folks left and right. We had firm control of the pace of the game. Know what the enemy team did ? The abused the fuck out of pressure. They splitpushed the fuck out of us until the game reached a point where all our power was useless because they had map control as me and my team were constantly running back and forth trying to prevent our inhib turrets from falling. We couldn't leave our base. I was the only one that recognized what they were doing. Our team was chasing too much when we should have been shoving lanes to ease the pressure so we could push back eventually. I didn't say anything because, its not the first time I've seen this and every time in the past where I pointed it out was like talking to a wall. I don't think most people even understand the importance of pressure. I don't even bother anymore.
I decided try do what I could and not blame them. I started focusing on shoving lanes. Know what happened ? I got overwhelmed. I often found my self having to decide whether to continue shoving a lane or go to a teamfight to prevent an ace, nearly all the the time I had to make this decision while there was another lane to be shoved. There is no way I could shove two lanes and teamfight effectively. Even without the need to teamfight, shoving two lanes takes a lot of fucking time. All I did was delay the inevitable.
We eventually lost the game. My team even acknowledged how well I did. One of them even apologized for wasting my effort. Point is, solo carrying is mostly a dream. Now I said mostly because I believe the only way to solo carry is by learning bullshit champs. Fizz for example, I believe can solo carry bad teams. Fizz is the closest thing to a god mode champ in LoL when used right. Zed, to a lesser extent and Yasuo are also champs that can effective solo carry a bad team. All one has to do is learn these champs, and I don't mean just play a couple games with them, I mean really learn them. Like 200+ K mastery points learn. Learn them to the point where you don't even have to think about what to do with them, it just becomes automatic.
Yea, I could dedicate the time to learning Fizz and stomp my way out of Bronze if I wanted but then, I wouldn't be playing for fun, I'd be playing to climb. My current roster includes, Azir(main mid) Irelia(main top), Vi, Aatrox, Sona, more recently Janna, Nautilaus occasionally and a couple others. I play Azir, Irelia and Vi the most and while these champs are all very strong, they are not bullshit enough to make up for poor teamwork. I'm not saying Fizz or Yasuo isn't fun, just that Azir, Irelia etc are more fun for me. I rather play champs I enjoy playing. Fuck it, I'll stay Bronze forever as long as I'm having fun.