I increased the gamma to 5.0 but when I log back into the game it reset to 0.0, I try again but it didn't work. Is there any other way to increase gamma?

what version are you playing in?

if you are in high version its kind of normal

you can use planifolia for gamma 5, get it from https://mods.tildejustin.dev/

you can adjust your PC's gamma if you can't increase game's gamma

First go to the Settings -> Systems

In "Display", press Advanced display settings -> Display adapter properties for Display.

In "Generic PnP Monitor and Intel(R) UHD Graphics Properties", choose Color Management -> Color Management... -> Advanced -> Calibrate display ->

In "Display Color Calibration", press "Next" 3 times. And in "Adjust gamma", you can adjust gamma whatever you want. if you want to leave gamma on permanently, press "next" nine times, that because most of the rest of the stuff in there isn't that important