How to pass platinum III?

Hello Everyone,

I'm @ Platinum IV and passing this stage isn't possible in anyway some games I'll be top5 but that's like mainly 1/5 games so can't move on.

I've been basically being matchmaked with people over 10K kills with one character (ennemies),

This flatters me by knowing I only have under 5K kills total with all characters but if it isn't my team that's * I get pawned by people that play all their life in this game or are cheating(seeing through walls is the one that's being used the most).

Is there anyway to actually reach that goddamn stage legit,I mean I had no problem getting up Gold (it was even faster than Silver or bronze).

Can you tell me if somebody here actually reached a level above cause in my opinion it's way impossible to get higher leveled at this point on european servers PC.