seen plenty of traders who knows really well their way around trading crypto, going as far as always reading book about market fundamentals and so on, I'd say they mostly got their TA and fundamental analysis correct if they're smart enough to figure it out based on the book they learnt from, but one thing that keep making these traders with extensive knowledge fail is the mental pressure, they just can't tolerate the draw down if market deviates a little bit from their prediction which honestly kinda normal as long as it doesn't reach invalidation point and then they cut lose too soon of their position.

do that 5-10x and you'll have no money left, like the recent flash dump, people cut their lose even after buying near bottom because price just keeps tanking but few minutes later price recovered fast and had they didn't cut lose they would've made quite the profit. this includes me though . just cut lose too soon on my position recently.