Hillsboro Burt Said:
"Display settings keep showing up after turning off computer: I made a mistake calling it display settings. I should have said ‘default settings’“
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Thank your for the Update.
Getting things Back to Normal:
Three thoughts to try in the order provided:
A. Single Out this User:
For temporary use and troubleshooting purposes, create a new Administrator User, seeing if all shows up as it should. If so, then it is likely an issue with the current user itself. Once determined, delete this Administrator User.
B. Reset your SMC and your NVRAM:
Sometime, changes (i.e. Update Installations) are made, and then settings (i.e. Finder GUI) become manipulated, technically. So, reset both. Note that is may take a few tries just to reset them successfully.
Use these Links:
C. Reset Finder:
Note that to reset Finder (so it operates correctly), you have to reinstall the macOS.
Why a Reinstall:
If you reinstall the macOS, nothing would be deleted. All intended, original files and Apps that came on your macOS would be reinstalled (which includes the Finder GUI). It’s all about keeping your system files intact.
Time Machine Backup:
Important: Prior to the reinstallation, Create a Time Machine Backup of your Mac, so that you can have something to restore your Mac from, should anything go wrong, doing the install.