I think what you don't understand about the market is that, so many top gainers you are seeing will soon become top losers which is undoubtable. If you want to invest in the crypto space, you will have to invest in the ones that are top losers so that you will make profits by the time the market starts going bull. Well know that the crypto market is bearish right now but with time, you will be happy that you bought at the dip. It is always preferable for us to buy when price is down so that we can start making profits when price is going bull.
I usually use this strategy too. Most times I go for tokens that are experiencing some dips and then buy at a low price. But you'll agree with me that not all tokens bought during dips will make it back up. Only tokens with strong community and good fundamentals make it back up.