How do I make my 3d game dark and give my first person player kind of a flashlight

I am currently making a first person game where the player has to solve mazes to get through each level. I want the levels to be completely dark. But my player will have a flashlight kind of thing.

I am using Unity 2017. (I tried the latest versions but they did not work for me for a bug maybe?)

Add a spotlight to your player object, make it rotate with the camera, adjust intensity and range.
Disable or delete directional light, go to lighting settings and remove skybox light, source, or change it to gradient…

I think, you have to Delete the Directional light and make the sky dark (delete the sky)