wanna know what makes me toxic

when I get last pick, I said I can play all roles, but worst is adc, then I get adc and the rest of the team is terribad, and I do best on team... I can carry other lanes, can't carry adc... And then they get super mad at me for asking them to stop going into 4v5's. Then they get mad at me for not grouping so they are 5v5's. we are 20 kills behind. team fighting is not what we should be doing. instead i get labeled as toxic, and not communicating with team... Im not even in bronze, but I swear the random bronze players I get placed with are so bad...