CEX deserves all the hates it getting now but doesn't mean it has also not been helpful to bitcoin and crypto space.
Don't you think Bitcoin could be more better without centralized exchanges than when we have them since all they could contribute is adding up alot of altcoins to pile up the whole crypto space and get people distracted towards investing on some of these coins at the end of their look for Bitcoin, to the best of my knowledge Bitcoin will be more under best of interest without them which will encourage having personal wallet that could be non custodial.
Some of the trusted one's are :
Binance
Coinbase
Kucoin
Kraken
Bybit
There are definitely others and they may be better than this I listed but this are the ones I have used
After the whole issues of FTX my advice is though buying from CEX is safer but storing all your funds there should be avoided and for holders just stick with DEX.
If you're doing this then know it's Al at your own risk because there's nothing that can change from their being centralized, hacked or backrupt and lastly in revealing your private details to anyone to track you down.