Why does someone always buy at the top every time BTC breaks out?

In BTC trading, a very common pattern is that the price moves sideways for a long time, then suddenly breaks upward, trading volume expands significantly, and candlesticks rise consecutively. Many people are still sitting on the sidelines, but when they see the market rally quickly, they start worrying about missing out and rush to buy.
However, after they buy, the price starts to pull back, sometimes even falling back into its previous trading range.
Why does this keep happening?
The first reason is emotional trading. When prices rise quickly, traders are prone to FOMO (fear of missing out), mistaking the speed of the rise for certainty that prices will keep rising, while overlooking their entry point and potential risks.
The second reason is failing to distinguish between a valid breakout and a false breakout. What matters is not just whether the price has broken through resistance, but also how it closes, whether trading volume remains elevated, and whether it can hold key levels after breaking out. A single large bullish candle does not prove that a trend has been established.
The third reason is a lack of a trading plan. Many people have no clearly defined stop-loss level, risk amount, or exit conditions before entering a trade, so after buying, they can only let the price dictate their actions.
A more rational approach is to treat a breakout as a signal to observe, not a command to buy immediately. Waiting for confirmation, watching how the price behaves on a retest, and calculating in advance how much you can afford to lose are often more important than chasing every rally.
Trading doesn't really test who reacts fastest, but who can stay disciplined when an opportunity arises.
When you encounter a BTC breakout, are you more inclined to chase the rally immediately or wait for a retest to confirm before entering?