Like with all contingency systems it's necessary to do a "fire drill" exercise from time to time. Pretend that you lost your data and attempt to recover a few files from backups. Pretend that your house burned down and you can't use any item from home. This will give you confidence that your system is working.
I use restic for everything Linux or windows except for Mac’s. There I use kopia. It just works. There is not much to mess up really. Just keep your password safe and be sure to test your backups.
