UpdraftPlus is very beginner friendly, https://www.ads-software.com/plugins/updraftplus (note, I work for UDP but look at what the reviews say about simplicity of setup etc).
The reason it’s the highest rated and most popular backup plugin on www.ads-software.com is because people regularly have problems with other backup plugins and eventually come to UDP.
It’s much easier to use a plugin than the backup / restore on cPanel. Reason is you should set schedules for regular backups, and it’s essential to backup to a cloud storage location like dropbox to avoid server-wide risks (for some reason some backup plugins suggest backing up to the same server!).
Also, having a backup plugin with a one-click restore will save hours if and when you restore the backup.
There’s lots of things that can go wrong with backups, and it’s easy to write a backup plugin that works 80% of the time. But backups are too important for 80%, so make sure you get the best and don’t find out too late.
Finally, look for a backup plugin that has good personal and quick support if you have issues.
Hope this helps: https://updraftplus.com/wordpress-backup-plugin-comparison/
On this basis, we believe there’s only one plugin that has all the essentials by default and a lot more features besides.
Let me know how you get on! ??