IceDrive lost thousands of my files without any notification. Their support escalated my ticket, then ghosted me for 2 weeks before closing it. I’m sharing a script to check if your files are actually backed up: https://github.com/rupumped/NicksAPPS/blob/main/Python/IceDriveVerification.py. Note that it requires argparse.
Usage: python IceDriveVerification.py C:\Documents C:\Photos C:\Projects --backup-root I:\
The only privacy-focused service is self-hostable, libre, open source and, often, free. Investing in a local server and running something like a SMB or CIFS sync to a hard drive you own is the best next step. Servers aren’t expensive, either. You can use a £100 potato or reclaim an unwanted PC. The only factors you should spare no expense in are the drives and their storage. Next important is power supply. Well-known Asia-based brands only.
Once you’ve got hardware, the software is fairly simple. I use Linux running Samba on my local network with Foldersync on Android devices occasionally uploading, but there’s also Syncthing (which I haven’t tried), Nextcloud (which has a database system that can be a pain, but is one of the nicest and complete cloud programs and has apps for everything*) and more.