Arch is a rolling release that gets the newest software once it's available. Ubuntus is Debian-based and it's also following the principle of stability over modernity so there's a big difference between how recent software you're gonna run on those two types of distros. But if you want to try the rolling approach you doesn't have to go directly for arch, you can use some Arch-based distro like M*****o (not recommended due to justified controversy). I know there are also Arco, Artix and Garuda that are arch based but I didn't test them. You could use them, experience pacman and aur but without struggle of setting up arch and once you get comfortable you may want to give arch a try
Good call out I'll update the comments. From my reading it also seems like they take a lot from arch sources but don't really contribute so another downside here
Right, from my experience it means that you just have to wait much longer for the bug fix to reach your device. From PC perspective I like the rolling approach much more as I feel much more up to date with the software that I'm using especially when it's mostly foss where I browse the open issues and release notes on a regular basis
I've used Garuda and I think it's great. It has bootable Snapper snapshots enabled by default, a post-install wizard for software, and a custom update script that's not too customized but does a couple neat things like warn you if Grub has been updated. It's biggest criticism is bloat, but on modern hardware it's fine. Still runs better than Windows.