Can't disable ambient light (yes, tried all the "solutions" out there)

I want my scene to be black unless I turn on a light.
I already set ambient light color to black and set ambient reflection intensity to 0.
Also, I can’t create black lights, they just don’t emit light.
It’s a 2D game.

What do I have to do more? D:
Please help.

Thanks in advance.

Thanks D:

Ofcourse you must choose some light color other than black (the absence of light). Also if you are turning off all dynamic lights and you still see something then you have some baked lighting. Disable it and rebake.