I've dabbled with Linux over the years, first with Ubuntu in the early 2010s, then Elementary OS when that dropped, and a few years ago I really enjoyed how customizable the gui was with Xubuntu. I was able to make it look just like WIndows 2000 which was really cool.
Which current distro has the best GUI, in your opinion? I find modern Ubuntu to feel a little basic and cheap. I guess I don't really like modern Gnome. I'm currently using Windows 10 LTSC which is probably the best possible version of Windows, but I'd jump to linux if I could find a distro with a gui that feels at least as polished and feature rich as Windows 10 LTSC.
Ultimately they both use the KDE Plasma desktop environment, which is the only DE I've ever seen that has a proper modern look by default (others IMO look like either the 2000's or an OS 4 Kidz), as well as being pretty featurful for multi monitor productivity
Arch+KDE Plasma is what I personally am gonna switch to this summer
Check out KDE Debian spin too. I booted the live iso to check some stuff and was seriously impressed. Gave me the early ubuntu 10-11 vibe where the OS just stays out of your way.
Its also pretty easy to get it setup to a semi-customized basic look and feel. Use one of the bigger themes, a popular Icon pack and a nice matching wallpaper as well as a little task bar customization and some widgets and youre set, and all this takes less than two hours.