Unfortunately is not that simple over the long term-ish. We can see it by just asking one simple question: So I sold my bitcoin and now I'm cash and wait for a correction to enter at a lower price. But what is actually that "lower" price? And the moment you started to put that question, the Universe starts to make fun of you:)
You could be lucky a few times, but then if the price start to skyrocket and you are still cash because now although the price has risen you still want to catch a little pullback to enter at a "good price"...
My advice for beginners: buy and hold. Forget about trading and start reading/learning and then come back just to test ideas. Becoming a successful trader requires quite a few years of really hard work not a few nights spent studying.