Account changes are restricted by a profile

Oddly, there are no configuration profiles mentioned in the report, as I would have expected given the error message.

I found a thread from last October that may provide you with the solution.

Apparently this is caused by setting Screen Time on an iPhone and choosing to share the settings with other devices.

Try disabling Screen Time on your Mac, or on the iPhone disable the "share with other devices".

See:

https://discussions.apple.com/thread/255240938?sortBy=oldest_first

Is this mac under management? If this is a personal mac, this should not happen.

If it is a work-issued mac, contact the IT department responsible for setting it up.

If it is a personal mac, Please run Etrecheck and post its full report here. Use the "additional text" button and paste the report into the text box.