Abandon your main role and pick the most META BRUISER you can possible pick and CARRY
Unless you already play a meta bruiser.
For all of you unfortunate souls who have been thrown away into bronze elo hell by flex Q, here's a possible solution to your problems.

Build:

or if youre super focused on split pushing if your other laners are winning substitute
with
or 
My team (bronze) was 0 vs 15 before laning phase ended. Enemy adc (
and mid laner
were stupid fed. I put the pressure top lane and it allowed my team to grab some kills and turrets. Once I was big, I caught some of them out of positioned and beat them down.
The enemy team then tilted themselves and self destructed on each other.
Results: Win
This was my FIRST Mordekaiser game (to add on extra emphasis). Honestly, its so hard to carry from the adc position in elos like this, (check out the jinx for example).
http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2350611369/208662196?tab=stats
FLEX QUEUE IS SO TRASH