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.
Technical analysis, keen observation of the market situation, collecting information from crypto trading experts will make you perfect. You may also spend some time with a crypto trading expert. He will teach you the tactics of crypto trading. When you have all these things, no doubt you will succeed. I also admit that luck is also a factor for making money but not everything.