Not a loser.
The opposite of a winner is someone who doesn’t know that they’re capable of being a winner.
You could finish last, and still learn something valuable. Or you could finish last, and quit because the skill ceiling is too high. It doesn’t matter if the game is too hard. It doesn’t matter if the grammar is too complex. What you measure is your reward.
You could cheat your way to first place, and become a better cheater. You could fail your Japanese class, but still know the difference between “に” and “に.” In both cases, you’re a winner: you’re still gaining something.
The question is: what are you trying to win?