Do you regret not selling your coins at any point because you didn't know it will drop ?
It is better to fix profits in installments. Although I understand that every investor's golden dream is to sell everything at once at the very top, you'll never guess the top of the market, so it's better to fix profits in stages.
The first thing better to do is to fix the profit at cost price, then you are guaranteed not to lose anything from your investment. Then you can put orders by the ladder method, guided by your own metrics. For example, when a project grows strongly, it forms a top, then the coin goes to a correction and tries to grow further. If I see that the second top was lower than the first, it means that the project has exhausted the fuel for growth and now there will be large-scale sales, then I fix most of it and leave a very small part.
If I see potential in the project, then I will wait for correction and buy again, but already at low prices.