Inspired by the double invert trick on iOS (known to disable HDR), I found the following for MacOS:
First download Black Light app here: https://michelf.ca/projects/black-light/
Open the program, and choose "Invert screen"
Then, On your Mac, choose Apple menu > System Settings, click Accessibility in the sidebar, then click Display on the right. Turn on “Invert colors.”
Colors are now "double inverted" same as you can set in iOS. I'm curious if more people can test this, does this make the display calmer for you?