I used a sprite for the flashlight that is faded out on the edges. That sprite is also on a lighting layer for the glow then I just have a script for turning it on and off. Basically a variable that goes up on press and if it hits above 1 (More than number) it goes back to 0.
It would be really fun to make the assets used into some kind of asset pack! I'll think about it hahaha tho unfortunately all assets were not made by me :')