There is no such thing as a magic signal to buy or sell, if there was then all you have to do is watch for the Golden Crosses and Death Crosses and buy accordingly. Indicators do not tell you the future, it can only tell you the past or the present, you can use this information to predict the probabilities to come. There is more than one factor that will push a stock or commodity up or down. So there is nothing absolute on the stock market, it is all about probability.
On the matter of crypto, each time the SBF story resurfaces on the new is a shot at crypto.