What the Martingale system does
Bet a small amount at a fixed target, usually 2×. If you lose, increase the next bet so that a single win covers every loss so far plus your original profit. After a win, go back to the base bet. It feels safe because you only need one win to recover, and most of the time one comes quickly.
Why it still loses
Bets grow exponentially during a losing streak. At 2× they double: ten misses in a row means the eleventh bet is 1,024 times your base. Long streaks are rare, but over hundreds of rounds they are close to certain, and when one arrives it takes the whole bankroll. The simulator shows the pattern: most sessions end up a little, a minority bust completely, and the average is below where you started, by the house edge on everything you wagered.
None of this is specific to Solacrash. No betting system changes the expected value of a game with a house edge; it only reshapes when you win and lose. The crash strategy guide covers Martingale, anti-Martingale and what actually helps: a budget you set before you start.