Device screen contrast

Hi all, I got a new tablet (Headwolf Fpad3, Android 13) that is quite nice for the price. The only issue I have is that the LCD screen is rather washed out (low contrast). I already tested with its system settings but with no luck.
I'm wondering if there is the possibility to create an app that may works like an overlay filter on top of all the other apps on the screen to increase the overall contrast. Thanks in advance

I don't believe you will be able to achieve much, if any, improvement.

If your screen display is poor, then it will always be poor.