Many people lose like this! Have you made such a mistake?
On the first day of the rebound, you think it's a sharp rebound and don't pay much attention.
On the second day of the rebound, you think it's a continuation of the first day's rebound and have no desire to trade.
On the third day of the rebound, you see many people shouting that the bull market has returned, believing it's a reversal, not just a rebound, and you prepare to buy when it dips.
On the fourth day of the rebound, you wake up and don't see the dip you were waiting for, fearing missing out, so you decisively buy in, only to find you bought at a high point. You see many people saying the rebound has peaked and it will drop to 60,000 or even 50,000, and then you get scared and immediately cut your losses.
Many people just go back and forth, losing repeatedly.