why is the lighting not working?

I want to add lightning in my first game. I created sprites. I changed the material of my sprite to “DefaultLitSpriteMaterial”. I added Point light in front of the sprite.

But in game, I see that :

Platforms haven’t light.How to fix that? Or you can you explain how to make lighting in a 2D game?

Thanks in advance.

You’ll probably need a skylight for indirect lighting. Scenes without an atmosphere could produce dimly/unlit environments…