all indicators are good, as long as we can use them well. in the sense that we must know the advantages and disadvantages of an indicator. After all, indicators are an approach, so they don't always match the theory, therefore we must dare to cut losses so as not to lose more. especially for day trading, which requires high discipline in trading
Indicators are always the lagging tools which means they will show up what had happened in the market and not the foretelling strategy so that you could easily make decisions of entering or exiting to make profits and to avoid losses.
I agree that indicators never match with what we learn from books and videos but if you are capable of combining indicators for deriving a strategy which might remain effective to help you find exact market turning points. Still, I never suggest anyone to go for day trading in crypto space regardless of their level of expertise in technical indicators and trading strategies as we have other methods to profit easily in this crypto space.