anyone successfully use martingale system or did you just lose everything

Tried out the Martingale thing a few times when I first got into crypto roulette, figured I was being clever with the idea of doubling bets after each loss. Made a spreadsheet to simulate it, too, but in practice, yeah, it got rough fast. When the losses stack up just a little more than you're ready for, your bankroll takes a serious hit. Limits on max bet also end the streak way before you expect.

Got curious about if anyone's actually come out ahead long-term with it, like over hundreds of spins, not just a lucky session. Or did you just end up getting wiped by one unlucky string? Tempted to mess around with a micro stakes version again just for fun, but my wallet still feels burned from the last round. Anyone actually keep their winnings, or is this just a trap every time?