Hi, in this guide i will show you how to make BeamNG look better.
1. Get into world editor (F11)

2.Search up for "sunsky" in scenetree, then press on it

3. On right side of your screen, look for option called "skyBrightness"

4.This setting shoud be set 40.000 on stock, change this to 100 then press enter

5.Leave the world editor (F11)

6.Enjoy your graphics!

If thats not enough, you can also change roughness in car color configuration

NOTE : This method can affect on your FPS, also im not recommending saving changes in world editor, just change it every time you get on the map
I hope my guide was helpfull