You need to get out of your head, mate.
There are plenty of opportunities out there if you'd just open up to them. None of them are perfect, but you could make them work. Just stop trying to find problems and start looking for solutions
And if asked about fighting a co-worker, just spin a story. And end it with "On that day I learned to never grab battle dwarves by their beards". And after that say that you resolve issues peacefully, but don't back down from an argument as long as it's constructive and on point. And that you're open to constructive criticism, because you want to get better at whatever it is you're doing. And that this mindset helps you avoid most situations others might consider 'fights'.