I’ve had similar issues and settled on a mix of Dropbox/Backblaze. It’s not perfect but I don’t think any of them really are.
You might want to take a look at what tooling/automation you have and go from there. I landed on my setup mostly because I make heavy use of of rclone, and it had good integrations setup for both.
Looking for a new cloud-based filehosting service
Please let me know if this is the wrong space to post this....
Amazon US customers have one week to opt out of mass wireless sharing (reddit.com)