How to win teamfights in low elo

pick anything that needs feral flare/devourer. get that item and build tanky. engage in teamfight and kill adc/apc. people won't give a fuck because they are thinking that u're tank and instead of focusing u they will focus your adc/apc while you're wrecking their team and then penta. did 2 pentas with xin in 2 games in arow in silver. "he is tank, forget about him, lets just focus adc". GL with that.