I think a little bit of Technical concept work on the crypto. One this is that it is somehow follow the forex pattern. If the market is bearish then it is fallen and fallen till some point and again it is move towards bull in a one way for the prolonged period time whether it is for 6 month or one year.
Any time in the crypto trading the technical analysis worked better but sometimes it go wrong because of some unwanted event or some better event. As in the present year many bad news came which dropped the price a lot and the predictors were unable to analyse.