Use /mute all right at the start of the game. Don't think of Bronze games as a team-oriented internet game, think of it as a single player solo carry game. Concentrate mostly on having a really good GPM ( Gold Per Minute ) and put some serious thought into your build paths. Even if you are buying the right items ( I Don't know if you are, I didn't check your match history ) think about whether or not you are building them in the right order so that when you leave base with components you have as much damage as possible (IE: On most champions it is a waste to stack crit chance if you don't have any damage yet.)
Work on dying less while being involved in more fights. If you are skilled then you want your team to have you in as many fights as possible since your skill will shine through and tip the battle in your team's favor. In order to do this you need to learn to play by staring at your minimap 90% of the time and learning to read the map so you know where you can make a pick or when you need to group.
If your GPM is high and you build properly (Each game should be a different build, builds are based on who you are against not just what you need to build on your champion. You will have maybe 1-2 core itemss but the other 4-5 items should be situational) are involved in the vast majority of the fights and you don't die too much you will win enough to get to at least silver 5.