I spent most of my career in the design of large scale backend IT infrastructure.
At today's scale of data, even personal use requires backups.
I keep primary image files on my local computer, a copy on a network attached storage device here locally, another copy on an external drive, another copy on a second external drive kept in a bank safety deposit box. The two external drives are exchanged periodically.
I periodically also "clone" critical data to a couple of laptops that I own.
For unimportant data, a cloud backup is also a possibility, but I do not trust any of the cloud providers to not poke about in my datasets. Hence anything personal, of value, or otherwise confidential never goes into cloud storage of any kind. This especially includes things like password vaults.
Paranoid? Nope. Hard drives fail, thumb drives fail, laptops fail ... almost everything fails at some point. Having multiple copies on different media types and locations is the only mostly safe bet.
I say "mostly" because in the event of nuclear holocaust, nothing will survive but cockroaches
