Borg Backup works great for that, exactly it’s use case. It’s a command line thing, but you can use Vorta as a UI if you want that. If you have a NAS, it can back up directly to that.
I have a second cronjob in my setup that syncs the encrypted archive to B2 nightly. Works great
It’s more of a “thought catcher” for me. I have a private chat set up that I just jot things down in the moment. I’ll occasionally go through and react with emoji to form a few storylines running through the week. It’s pretty much a 1 sided text message conversation