The right strategy approach allows traders to get returns, but some other things also need to be considered including the right moment and time in trading. Analysis is also needed regardless of any strategy, so profits do not only depend on the strategy.
Your strategy is just one part of the pie for you to have a profitable trade as without timing the market correctly or reading the market very well to interpret it in the right way, you're still going to lose. You can master one trading strategy that works for you before but still that strategy can fail you when others things aren't in the right places. Trading needs constant improvement therefore we should never be stuck in the Idea that we can use only one strategy to make it in trading without trying other things out. Traders are meant to have backup options and be adoptable in all market situations. Mastering one strategy is good but don't just stop there, have other options Incase of emergency.