Trading is the same whether currencies, metals or crypto has you have put it,and for you to be a profitable trader you need to know what affects it...news and all that.
Once you have this information your trading system has to be one you have used before, you know what manipulation looks like on the chart and all that then you can scalp away.
Trading is the same, but in crypto, volatility is a lot higher! And crypto is growing every once in a while... so that high volatility, with the fact that some coins are reaching new ATH prices every few years, making crypto to be traders dream! You can literary apply so many trading strategies, because the price is making crazy moves, sometimes on a daily basis!
Of course, crypto is great for other reasons as well! But I think here is the point about how can you trade with crypto, and I believe if you have some skills and patience, you can make a nice profit with any strategy!