As much as I like to encourage traders, terming any indicator or strategy the best is always OFF with me.
You're right, it's not all about using a particular indicator while trading that matters because they are only things that gives us signals concerning the movement of the bitcoin price to wether if there's a likely possibilities for up or down, those indicators are not the perfect determinants that gives direction to wether bitcoin rises or falls while trading, but can help in understanding the possible feature needed while going through the study base on how we are able to interpret them.
There is no best indicator or strategy anywhere, though you might have your personal best indicator, it will only be with you as the one that works best for you, not for everybody.
Many have made this common mistake already thinking those indicators are what determines their accurate prediction while using them, we have to apply our own final judgement after considerable reasoning to bring out a perfect result, trading is as simple as having a personal understanding of it.