Well, there is a way out of bronze, but you're not going to like it. You're going to have to get better. I know it seems like you just know your mechanics and stuff, but, believe it or not, if you belong in silver, then you should be carrying over half of your games all by yourself. I know I'm probably coming off as a bit of an asshole, but your teams are not always going to be toxic. Trust me, if you haven't been below bronze 3, then you have no idea just how far down the rabbit hole goes when it comes to horrible teammates. I went on tilt and got pushed down to bronze 5. You get some of the worst players I've ever seen. Imagine the worst player you've ever seen that wasn't intentionally feeding or disconnecting, think of them playing a little worse, and imagine each team having 1-2 of these players. It can get that bad sometimes in B5.
I can't help but notice you're playing a lot of difficult feast-or-famine champions, or champions that heavily depend on a gold lead. Might I suggest that you try some of the simpler champions?
For instance, you seem to play a lot of Vayne and Yasuo. Why not try Jinx or MF in the bot lane in normals? Why not try Annie or Lux in the mid lane? Of the 4, Jinx is the only one that seems outstandingly expensive, iirc.
Then, get your priorities straight. You will not believe how many people don't know this. Prioritize everything on this list in the following order, and I will bet that your play will improve:
- Not Dying
- Towers/Inhibitors
- Smaller objectives (Dragon, Baron, Rift Herald)
- CS (getting those gold income procs if you're support)
- Kills
If you want me to explain further, just ask. :)