Making my Lantern serve a purpose!

I am working on a horror game in a forest where the character have a lamp. right now the scene is so bright that the lantern doesn’t really serve a purpose so i want to make it darker. I have tried tweaking the lightning as much as i can but cant find a way to get it even darker. i can get it darker in the view port by changing the exposure but i am wondering if there is anyway to get it this dark in game. if anyone have any tips i would appreciate it!

Here are some screenshots from what i am working on: