An individual will understand to analyze the market only if he spends lots of years in the crypto market. The first step should be learning and the second step should be getting experience through the utilization of a small amount of money.
Honestly I still think professionals might not lose all of their funds, but yeah some funds are a natural thing. We can learn these things by reading stats. For example
Attention Robinhood power users: Most day traders lose money in this article we can see most of the professionals who are doing day trading lose money no matter how long they have spent there time in trading. The type of trading is the main thing that decides whether professionals make money or not.
For example, if we are doing long-term trading, then a newbie can make money, as it spot, if it's swing or day trading, then stats are in front of us saying, professionals can't make a profit consistently in day trading or in futures. I have seen many examples with my own eyes like I read on news. But as you said we learn from our mistakes and we should try to avoid them next time, but due to high volatility of the market sometimes it becomes hard for us.