Glenn Fleishman reminds us that iCloud Drive shouldn’t be used solely as your backup service.
Apple doesn’t offer any way to let you backup the data for which it has the only copy. And, in many cases, you may have a mix of information that could make it hard to restore, even if you have a full copy.
I used to use iCloud Drive-only, but now I’ve diversified. An ideal solution is a combination of cloud storage and physical storage. There are cloud services like Backblaze you can use for your Mac, as well as an external hard drive. For iPhones and iPads, you can use a special flash drive like iXpand. Earlier this year I bought a wireless SanDisk that I can use both with my iDevices and Mac.
Check It Out: iCloud Drive is a Sync Service, Not a Backup Service