I think bitcoin price is difficult to predict accurately. We can only judge according to market changes and some external news, but I will still buy it because I believe it will appreciate again. It will reach a height we can't think of.
It's certainly not an easy thing to do, but with a lot of study you can achieve some positive results! It doesn't mean that you will always understand how the bitcoin will move, also because it is very unpredictable as an asset. But you can predict small fluctuations, manage losses and take profits.