They're very personalized to my setup, so they're not particularly useful in a general sense - I'd recommend something more like using this guide which seems to be pretty good: https://jumpcloud.com/blog/how-to-use-rsync-remote-backup-linux-system

Learning bash has been great for me, it's helped a ton being able to automate so many different things even just like installing and configuring specific applications to work the way I want, etc

I think a script to manually run for manual backups plus a different script to run for automatic backups scheduled via cronjob is a great way to go.