I suggest you head over to /r/unixporn, and you'll probably be presently surprised. Contrary to popular belief, most of this stuff is not very hard to setup. Of course, there are people also showing off custom tooling and the craziest (and sometimes silliest) things they can pull off, but a beautiful interface is usually something you can do in under an hour. It is customary to include a repo with all configurations, so if you wanted to direct copy paste, you can do it much faster than that.
Unless you're talking about the look of the physical machine. Well then that's an easier fix ;)
In my opinion, Apple is the one doing very poorly on (software) looks recently. Liquid Glass looks like a joke. Both KDE and GNOME look better. The new Expressive Material 3, on Android, actually looks great.
Unless you're talking about the look of the physical machine. Well then that's an easier fix ;)
https://www.reddit.com/r/unixporn/