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The library path in your error message indicates that you downloaded a "command line" binary tarball from one of the SageMath mirrors but you never ran the sage executable that it contains. The first time you run sage it will ask you to wait while it runs a script that replaces all of the buildbot paths with hard wired paths to the directory into which you unpacked the tarball. After that, the sage installation cannot be moved.

This also indicates that you chose to ignore the recommendation for how to install sage for macOS as published on the Sage download page. My suggestion is that you follow that recommendation and download the SageMath app from this github project. While you are at it, you may as well download version 9.5.