I have installed the system on my laptop, but I am worried about the system failure. How to make a snapshot backup.
Snapper or timeshift are good candidates for your needs.
I prefer snapper if you have a BTRFS root device, it easily takes snapshots of your system. Consider using
btrfsassistant with snapper for convenience.
here is a guide on snapshotting btrfs: Working with Btrfs - Snapshots - Fedora Magazine, and here is another good one, Fedora Workstation 35 with automatic btrfs snapshots and backups using BTRBK | mutschler.dev
Another option is to use Gnome Backups / Deja Dupes. Uses a GUI and you can back up to cloud providers like Google Drive. This is what I use and it’s been fairly simple to use as a non-technical person. Available right in Gnome Software.