It's hard to predict which out of thousands of alts will go up, but what you can predict is that once a coin went up, it's bound to go down. Like, take the best performing coin right now, Dogecoin, there's absolutely no justification for its price, it has no adoption or promising features, it's pure hype. It's bound to go down, so if you carefully short it with small leverage, you're going to make profit. Obviously, the danger is in the known trading wisdom - "the market can stay irrational longer than you can remain solvent", but still the fact that pumped coins will go down is something that you can rely on.
You can see that currently, Doge is indeed a hyper pump that occurs in many coins but in contrast to Dogecoin which can penetrate the top 4 coinmarketcap doge, it is extraordinary how the whales are very compact to increase Dogecoin so far there will definitely be even bigger surprises for Dogecoin. much more expensive or more or less reaching a much higher price value than it is currently I believe the Elon musk will also provide a bigger surprise.