a good loser - A good loser is just a loser who still thinks they're not a

A good loser is just a loser who still thinks they're not a total piece of garbage.

I lost the game, but I still think I'm the best. I'm not a loser. I'm just... mildly defeated.

He cried when he lost, but he still called me a 'wimp' for winning. That's not a good loser, that's a crybaby with a complex.

She lost the bet, but she still called me a 'moron' for winning. That’s not a good loser, that’s a sore loser with a mouth.