If you're in bronze you should not care about what your team does.
0-10 midlaner? Doesn't matter enemy mid doesn't know how to build or roam anyway.
1-16 at minute 15? Doesn't matter they'll nashor throw or lose to not being able to defend splitpush.
Support is playing full ap Lux? Well at least you have two ap carries on your team now, better than having a thresh who can't land a hook.
Stop blaming it on your teammates. You get 0-18 yasuos at every ELO. You get smurfs, we platinums get eloboosteds and eloboosters. You get fresh level 30s who can't play support, we get the onetrick who got his main banned and can't do shit now. Your job is to carry that guy.
I like to quote an example that happened on a gold 2 promotion series game. We got obliterated on every lane. Just managing to keep the base up because we had some waveclear. I left bot without any items aside from my IE and my boots, and just farmed up the super minion waves and the normal waves at our base for 10 minutes. At min 35 i had 4 full items, we were with only 1 nexus turret and they went to nashor. So i said fuck this, pushed the mid wave, took down inhib turret, inhibitor, both nexus turrets and the nexus itself while my team did the best they could to stop the recalls (and eventually they stole the nashor too which helped the pushing). We had no business winning that game. The player with the best KDA on our team was our support, a pyke who was 0/2/5. Every member of our team but me was nearly 50 cs behind their laner (I was 100 cs ahead because i just farmed for 10 minutes).
Yeah, we had no business winning that game. My team was absolute trash. 4/10 toplaner 0/3 midlaner 7/11 jungler. But we won it because of a random play i made. I didn't expect it ro work, but i knew the chance to win was higher if i tried that than if i voted yes to the surrender vote. That's what you have to do. Find a way to win the game, even if your team isn't cooperating at all.