What software do you use?

I'm finding myself frustrated with the open source backup software that's available. Speculatively, the main focus seems to be on sysadmins that want to script their backups in systemd files... But these aren't shared.

I currently use restic, and it just feels like a trap of unknowns. It's well documented how to use the command line, and it has a pretty great reputation at this point. However, despite writing some decent scripts to automate the backups, I can't help but wonder what all I've done wrong.

Am I the only one that has these concerns? What are folks here using?