Well, the simplest way to go if you want opensuse-like rollbacka would be to just run opensuse... if you need ubuntu-specific stuff (you don't) there's distrobox.
BTW I've been running tumbleweed for a few years now and didn't roll back once... IDK if the craze about rollbacks and immutable distros (arguments in favour of which often boil down to "easy rollbacks") is justfied or not.
I am using Tumbleweed on my home desktop for close to 10 years now and I have used the rollback on 3-4 occasions. Probably could have fixed 1-2 of those issues in another way, but I was to lazy and just wanted to get back to more "stable system" asap and wait for further updates to fix the issues.
Besides snapper itself, you'll have to setup triggers to automatically take snapshots before/after running dnf, generate the appropriate boot menu options and reorganize your btrfs subvolumes so that everything that should not be rolled back (eg /var, /root, /srv, ...) is in a different subvolume than /...
Honestly, if I were you I'd just give opensuse a try instead: I came to tumbleweed from fedora, and it's basically the same, solid thing (only, without the new version drama twice a year).
On Crystal Linux, you do your thing, screw your OS, reboot to choose a snapshot that was made automatically without your intervention, and that's it. Nothing ever really breaks.