it's better to use global exchanges like Binance, huobi, etc. to keep your assets safe. yes, although there is no guarantee that your assets are always safe due to the many hacking threats, at least the big exchanges will be more responsible to their users.
There are so many bad reports about small and medium exchanges because of this I stopped trading on these exchanges and just focus on Binance and Kucoin for centralized and Decentralized exchanges, it's safer to trade on DEX, because it's a smart contract-based but always check liquidity and the token smart contract, that's some of the traps in decentralized exchange.