The fact that you're trying to use Windows 11 to adjust the brightness makes me think that you're not follow the right instructions?
These are the instructions you need: https://www.damiensymonds.net/cal_S5X_pc.html
This can't possibly be the right white balance. Her hair is kinda purple.
There's a white truck in the distance (right-hand side of the photo) which you can use for white balance.