I believe this happens to almost everyone, who is investing in this market, I have met many times like this. Every time I finished selling the coin went higher and when I bought it fell even further, it's normal in trading, as long as we always make a profit every time we close the trade everything is fine. The market is always moving so we cannot expect to sell at the highest price or buy at the lowest price and if you have a long-term investment strategy, don't worry too much about short-term fluctuations.
such an incident is indeed every trader or investor will certainly experience it. because if we remember that crypto is volatile it won't hurt us. such things are no longer surprising in trading.
but actually if you choose bitcoin as an asset or as a coin choice for trading it will be much more profitable if it is used for long-term assets. because in the long term we really don't care about the market situation whatever happens and what we are waiting for while holding for the long term is only bullish and getting big profits