As a linux user, i have just setup my own backup solution to backblaze using Rclone and their S3 compatible storage.
Which is fine and all, but then you're paying per gb/month. Depending on how much you want to back up, it can cost you a lot more than the personal plan.
e.g. https://www.reddit.com/r/backblaze/comments/jsrqoz/personal_...
It seems that they may be changing their tune, at least as of a few months ago: https://www.reddit.com/r/backblaze/comments/m3xynu/backblaze...