Many people think that bitcoin should move up in a straight line but this is not how the market works. Markets may show us many up and down before moving up and sadly people are not ready for these movements and sell their bitcoin before it reaches the all time high.
Cryptocurrency market sphere and especially bitcoin market speculation is not something we can rely on or trust to infinity, it's very obvious that the price of Bitcoin is not constant or stagnant, it has rotational speculation we know, while people adventure into the disadvantages of it, is when they purchase without reading the chart of cryptocurrency and comprehend it wisely, so that's the factor that leads whenever the price accelerates and some investors will be inquisitive to sell, and this also affects investor's that purchase when the price is high.
It is like expectation vs reality, and now, it is also true with bitcoin. I am sure some of these newcomers have high hopes when they entered crypto. They thought that what they were reading about getting rich in crypto is easy peasy. But to come find out that it is not a walk in the park to achieve such position. As bitcoin market is very unpredictable and it is influenced by many factors, it is hard to make short-term prediction. And so getting profits is not a guarantee in this market. You need to work on your analysis and trading, and it will take time. If you have no patience, then, this market is not for you.