timeshift - “A Linux application that provides functionality similar to the System Restore feature in Windows and the Time Machine tool in Mac OS” (maintained by linux mint) became available in epel again recently.
I think it was dropped for a while as it focused on BTRFS (fedora) which RHEL doesn’t use. However, it can still be used on RHEL/clones using the rsync option.
Even has a nice GUI… AND you can include non-system files eg. home dirs in the snapshot.
Though it seems you have to use from the command line if you want to create an adhoc (unscheduled) snapshot.
Definitely worth a look. (though I haven’t tested it yet myself).