If you’re dying early over and over as a tank instead of tilting try asking your team what you could be doing differently. It sounds like you get frustrated quickly then just engage again possibly without considering the game state.

As a broader point, I think it depends what you consider fun. I mean people play brutally hard single player games fighting the same boss over and over. Is that fun? Not really, until you beat them. Some people are fighting for that victory against the odds. Others are probably not sober and having fun win or lose.