Can't win Plat 3 to 2 promos

Plat is total garbage. This is my 8th time trying promos in a row, and as I soon as i start my promos I get the worst teams possible.

First game today and I get a jinx who got boosted and fell from diamond 4 and is now plat 2.
2nd game I get another r%%%%%ed ADC and a supp, both who get rekt early and just end up trolling rest of game.

How the fuck do you get out of this elo hell? And people who can't play for crap, don't call carry roles like mid or adc.