There are two optimal times to build a position: one is during a pullback, and the other is just after a breakout of an upward trend.
However, the common problem among ordinary retail investors is that when a cryptocurrency just starts to break out and rise in trend, they are uncertain about its sustainability and whether it is truly a leading coin. They remain in a wait-and-see state, and by the time the facts are clear, there has already been a significant increase. At this point, they are also worried about buying at the peak, and thus repeatedly miss out on quality leading coins.
In fact, when a leading coin has just broken out and started to rise, followers will definitely come in waves, making the rise easier. At this time, it is safe and bold to chase it. After reaching a peak, it generally won't suddenly drop; instead, it will decline gradually with small waves of rebounds, leaving enough time and opportunity to exit. It all depends on whether you can recognize the situation and whether you are willing to exit.