Before a real market rally begins, the market usually goes through a consolidation phase. The goal of the big players is to shake out the retail investors' positions through repeated fluctuations.
For example, when the price of Ethereum rises to 3700, if you do not take profits in time, you may encounter a sharp decline that makes you regret.
After the market warms up and rises to 3700 again, would you consider selling? If you can resist selling, there will be another major drop down to 3300; would you feel regret at that point? If the price rises back to 3700 again, would you choose to take profits?
I guess most retail investors would choose to take profits. Even if retail investors hold on, as the market fluctuates again, their positions will eventually be completely shaken out.
The big players will use big data analysis, and only after the retail investors' positions are cleaned out will they initiate the rally. This is why frequently trading retail investors often lose money; because the big players have a deep understanding of human weaknesses.