I will go Centralized exchanges, DEX like balancer and uniswap are good but still not preferred to CEX for me, also DEX are now more dangerous for newbies than CEX because cloned tokens can get listed on DEX without anyone investigating on the tokens,
1. Bithumb
2. Bkex
3. Coinone
Also it's not that good to go straight on top exchanges first, it should come later, I have my reasons for that
I prefer DEX. DEX are way more better than CEX exchanges. they are easier to use, no signup requirement and no kyc. that cloned token listing is a big problem so If I would launch an exchange my first problem to solve will be eliminating and stopping those clone tokens.
I like a exchange like Idex exchange and there are not any clone (I didn't see). I think swap and dex are different and clone tokens usually target swaps.
Some instaswap are decentralized platforms too, for example uniswap, DEX would have been perfect but it has some unavoidable flaws like high gas fee, fake tokens in disguise and real tokens, but it's more secured than centralized exchanges but centralized exchanges has the best experience, volume and liquidity, DEX haven't beat this yet.