I've never been able to use MacBooks since apple switched to LED backlighting.
Turning off the keyboard backlight and using Gamma Control has made my MacBook 12" with Big Sur useable.
I'm astonished it was something that I would never look for (keyboard backlight) in a million years.
This is a good reminder that in life, the solutions we look for may be in places we never consider.
I didn't even know you could turn off the back lighting on the keyboard.
Thank you Tait.