If I were clairvoyant and could tell when coin prices were bottoming then I could buy more of all cryptocurrencies.
For example, the price of Solana coins drops to 50 dollars and then rises again to 500 dollars, but at 50 dollars I don't know when the price of Solana coins will rise, so I still don't buy it.
If you refer to the DCA trick, it might be easy to do, but unfortunately I don't have a lot of money to buy a coin in stages using the DCA technique.