You have to spend more times for analysis price action and fundamental of each crypto, currently there are some altcoin was going up to 100% just in 1 or 2 days, and this good situation to make good profit. To earn maximum profit we should more focus, keep patient and set target profit monthly and avoid greedy.
I would even rather say he should spend more time on learning and maybe over time, he would stop depending on his luck when it comes to trading the market. The mistake a lot of people have made in their trading years is that, they feel luck is the thing for them to always make right calls, but no, waiting on luck is just a way of setting yourself on fire pretty fast.
Luck is only applicable maybe in the movement of the price in the long run or how far it moves, but basically everything about trading, entering a position, exiting a position either through selling for profit or stopping loss, are all based on the knowledge that you have. Without it, you are doomed.