Well this looks from one-side perspective, to understand it more we have to know what the rest of the 7 really thinks on which part you screwed up the whole team.

Sometimes it takes self conscious and humility to understand your own mistakes and if you are really letting the team down. If I kept dying in the team and the team loses, I don't mind taking the blame and getting the boot despite I actually know that I have beaten the fight before.

Just move on and take my advice --> best is just don't talk too much when you join a team, practically be a ghost player in the team so that you don't stand out too much to prevent others from observing you so closely for every mistake you made.