This may be a better question for r/datahoarding, however, most answers I get from there tend to be much higher scale than I'm at.

I have a small self hosted setup along side my personal phone backups to my NAS, including:

• HASS
  
• Paperless-ngx
  
• NGINX proxy manager
  
• Mealie
  
• Homebox

Wondering what the best option for backup/redundancy is? I currently have an RTRR backup setup for all my critical files to an offsite NAS (old one that wasn't dead yet) that runs once every 6 hours (off-site has a monthly data-cap so can't do live) Are there better options of an off-site, self hosted, backup?