How can I prevent the screen from turning dark gray while using the Snipping Tool on Windows 11?

If your problem is that the screen becomes so dark you can't see it, then you may want to turn up the brightness in your display settings or enable/disable HDR. One setting may work better for some and the other for others. 

If your problem is that the screenshots them selves come out grey sometimes or all washed out other times as it was for me, open up settings in the snipping tool and turn off the feature "HDR screenshot color corrector". This feature trys do dim bright screenshots and brighten dim ones, but it does a bad job of it.