Google Drive is safer than OneDrive or Amazon's AWS -- you can read reports online about Microsoft & Amazon arbitrarily blocking people from their file storage -- but ideally you should back up your stuff to more than one place. The best long term storage medium is DVD or CD, which I think last something like 100 years. Corporate often uses tape, but that's not practical for individual consumers. Conventional hard disks store data long term better than SSDs. Some people invest in NAS, Networked Attached Storage, which is basically a minimal PC running Linux with a network adapter & multiple hard disks, often mirrored, so everything is written to more than one hard disk at the same time in case one drive fails. I set up a poor man's version with 2 NAS hard disks, a $25 dual bay USB drive dock, and Win11's storage spaces drive mirroring.
In theory cloud backup is the best alternative because your stuff is on multiple drives that are constantly monitored, replaced at a hint of problems, and located in a very secure building with power backup, tight security etc. I've not read of anyone ever successfully hacking into personal cloud storage -- usually it's some company that has misconfigured their storage or they have public facing VMs. There is the possibility of the company providing the storage monitoring what you have stored to protect themselves if someone stored something like child porn. That's NOT to say s*** doesn't happen, so it's best to use both local and cloud storage. Regarding the Ashampoo app's limitations on Google drive, maybe you can use the Google drive app to sync the folder with your backups?
support.google[.]com/drive/answer/10838124?hl=en
To do the same thing with OneDrive requires setting up a hard link.
What I'd think was one of the best options ties into my post to Dragonlair... Windows had/has File History, which automatically syncs files/folders you chose to a USB stick/drive. BUT, File History competes with Microsoft's backup to OneDrive, so they're making it go away. In Win11 25H2 it's no longer in Settings, and when you open it in Control Panel it has fewer options than it used to, but it does appear to be functional, though for how much longer I couldn't say.