If you want daily trading, I think ethereum or Bitcoin can be profitable. The volatility of the two coins is quite high but it is still safe to hold if the price goes against our trade. Trading on altcoins that have just launched in the market may also fluctuate high but if the price drops, sometimes it is difficult to return to the price we bought
I agree with you, choosing coins with high volatility will speed up getting profits but at least we buy coins that have a strong market capitalism, because that will really help the price return when there is a decline, there have been many coins that are relatively new launches with less market capitalists Strong makes it difficult for the coin to return to the price when we bought it, instead of making a profit, the price drops even more.