Struggling with cloud backups

Hello, I built my first unraid box (loving it!) and just completed migrating all my data & drives over.  I'm still learning all the ins and outs as far as dockers and how unraid does things but getting there...however:, my only issue now is how to setup a remote backup. 

In short, I have 2 shares (pictures & home videos) that are "irreplaceable" so I want to ensure these are backed up to a cloud provider (I currently have Amazon Drive, Google Drive (100 GB each) and I do have a free-tier backblaze).  I have tried the following apps but not much success:

• Rclone-GUI (I'mtheNachoMans docker):  I have the gui running, but when I try to connect to google drive I always get Status Code 500 errors
• Duplicity:  This one actually connected to gdrive very easily, but failed mysteriously after writing to it with an "out of space error" (despite plenty of space).  Plus I've heard duplicity is kinda clunky (and I agree)
• Kopia:  Couldn't get the auth working right
• Others I've studied but haven't tried due to either not-free etc:  Crashplan, Borgserver, Restic, Duplicacy... 

I feel like this must be a "simple" thing but with so many options I'm a bit confused where to start.

Note:  I actually would prefer doing simple rsync-like copies (perhaps tar.gz'd) rather than complex packaging formats as those make me nervous on how to restore.  Also, while I'm comfortable creating scripts/cron jobs I would definitely prefer some nicer GUI to just make life easier

PS>:  As a future plan/alternative since I just discovered Tailscale might be to build a second unraid box at a remote location to rsync to, however issue there is if power goes out how to ensure it boots back up (i won't have easy access to it), anyone who has success with this method?  In a similar manner, has anyone just created a cloud-instance of unraid?

THanks!

PPS:  My main PC is now Windows 11, which I've realized seems to want to (annoyingly) put EVERYTHING on OneDrive.  I was considering therefore just doing the reverse and pulling the data from my unraid share to my windows11 pc and then just let OneDrive do it's thing, but this seems unsatisfactory b/c I'd like to keep all of that at unraid level