Loss Streaks

I love league. I really do. Ive spent countless hours on it, at least 1500. At least. And lots of money too, probably in the area of 3-400. But I fear its coming to an end because of matchmaking. My last 10 games I have been placed on a team that has no chance of winning after ten minutes. Bot has lost 100% of my last 15 games unless im support. Every single other lane just seems to feed no matter what I do. Im not saying I do good every game, but I cetainly dont do awful. Yes if you look up my match history it looks bad but if you check the details and see when people died its pretty plain to see that there is little I can do to prevent my own deaths let alone a loss. When the jinx comes up from bot with 12 kills by fifteen minutes and 3 shots you what is there to do. When your zyra has 18 deaths by 25 minutes and rages at your team for everything what do you do. When mid feeds ahri 6 kills and youre an adc with zero peel... you get it. What im saying is what the hell do you do when you just lose all hope. When every single game appears to be unwinnable no matter how positive you try to stay. Ive tried everything. I just dont know what to do anymore.

Tl:dr what do you do when you lose 10 games in a row because every single lane (including jungle) lost but yours.