To make a profit, you need to invest and hold the top coins, because they will always be safer to invest and they will always be promising, only you need to constantly analyze the top coins.
I do this. honestly, I've been holding some top altcoin in the long run. so far, I am still waiting for large upside potential, to sell at the right time. bitcoin, ethereum, BNB, are the first choice before investing in other tokens. I'm sure many people have plans like this...