both types of exchanges have advantages and disadvantages, however, I think in terms of profit, people will most likely choose CEX, moreover nowadays popular CEX like binance, or kucoin can bring a coin to the attention, and increase its price high. things like that will have no effect if the coin is only listed on the DEX. however, personally, I use both. I think DEX tends to be easier to use and simpler. it all depends on your needs.
Decentralized exchanges make it possible to buy coins at a low price. And when such a coin receives a listing on CEX, its price can increase several times, which gives the trader a good profit. But in any case, you need to spend DYOR, since there are really a lot of scams on DEX.