How do i use darkness?

Hello, i dont know if i can explain myself good but i want to make everything super dark, and make a light super brighter so it makes a dark area effect, but i dont have any idea to make it. Thanks

You can do it in various ways, in my game what I did was a big Sprite that cover all screenwidth/screenHeight with a transparency then focus the circle in the center to my player the result can be found here just play the game until you reach the first dungeon.

obj_hud_nightmare

Other way can be with light a built-in of GDevelop but I never tried.
In the past when i did a C2 game I use this Construct 2: Basic (But Epic) 2D Lighting! - YouTube but i didn’t try this on GDevelop 5

Hope this helps.