You probably don’t have enough on-device storage space on your Mac, and it’s probably not that much different on your iPhone or iPad. This is fixable across your network or over the Internet with the solid Asustor Lockerstor 2 and Lockerstor 4 network attached storage devices.
The Asustor Lockerstor 2 is a compact NAS for your network.
Is there anybody left that has only one computer? We’re increasingly living in a world where data storage needs are escalating, and not everything is best stored in the cloud.