I found this site a while back - basically it will ask you a bunch of questions on your usage of your PC, and will came out with a list of recommended distros, and a list of reasons why YOU could like or not like it.
There are some similar sites to this one, but since I’m not familiar with them, I won’t post them. They are simply DuckDuckGo-able though.
Just install the DE you want on the distro you want… You aren’t limited in your DE by your selected distro, and you can have multiple installed. most of the time you have a drop down when you login that lets you pick your DE.
@Coolcoder360 Installing a DE after installing a distro has often caused me a lot of bugs 🥴. Maybe it is just me