Unlit style texture shadows

I am trying to replicate an old 90s style 3d game and I have the look down but I am not sure how I can get the shadows to work. I am using a game called Stunt Island as kind of my reference for graphic effects, which you can see here

Here is my attempt in UE4

I need to be able to cast shadows on the ground, preferably completely black ones like in the original game. You can see a slight shade under the tires of the car but not a full shadow. My material isn’t set to unlit but I am using an emissive color and using a const 0 on Base color, Metalic, Specular, and roughness. I guess I’ll also sprinkle in a second question which isn’t as important but I could really use it. How would I create flat lighting styles? Pretty much sharp lighting like the following two pictures

As you can see, the lighting is very sharp and in two different “circles” around the light source. I’m trying to figure out the best approach to recreate that style.

You might be able to tweak the cast shadows in a post process volume.

For the sharp contrast between light/dark shading, check out this video because he does exactly what you’re looking for with the windwaker style. I used the same tutorial for my game