After three years of blow-ups and losses, I finally see the truth:

Trading has never been a speculative gamble of small money chasing big gains, but a probability distribution game where large capital seeks small profits. If you harbor the desire to get rich overnight or aim to achieve big with small stakes, you will inevitably develop a gambler's mindset, and the ultimate outcome will be liquidation. Trading is a long-term race in life, not the entirety of it.
If you are fortunate enough to escape the quagmire of losses and achieve a life of trading, you have reached the ultimate state of trading. At the core of a truly stable trading system must be the principle of using large capital for small gains and strictly controlling probabilities. Let go of the obsession with getting rich overnight, deepen your understanding, and only then can your operations regain composure and rationality.