A certain coin has reached the end of a trend, why not short it directly?

This question is quite typical, it's the bottom-buying and top-selling approach we often like, which feels good but is a harmful system.

1. The bottom and top are hypothetical, predictions made beforehand, and only after the fact can we know. If we are wrong, is there a contingency plan?

2. Assuming this point is the high or low you predicted, there are many possible subsequent changes: continuation, reversal, patterns... Once you enter the market, how do you respond to these changes?

3. Everyone wants to achieve profit, how to accomplish it? The key is to control the process and maintain a good mindset. How to do this? Develop a protection strategy, what to do if you are right? What if you are wrong?

4. Many times, giving up, what exactly is being given up?

This question requires you to answer it for yourself.