Hello mates!

I just started to queue in ranked Feast. I'm stuck in bronze and i have no way to leave it.
I play my favourite class ninja but i'm losing so many games (atm 30% win). I don't know what I'm doing wrong. I noticed my team mates doing huge mistakes like bad positioning or tank playing like a dps but I can't tell them because of the chat restriction (which is so stupid btw).

It's pretty much impossible to carry a team by my own but I'm here to ask any tips or advices that can help me to maximize my win chance.

Thank you all and have fun