How do I make a collision polygon hollow in the center?

Basically I want it so that the collision polygon is kinda like a donut since I need it so that the inside is not a collision point and the outer bit (the snake itself) is something you collide into. The problem is that I cant figure out how to make it so that it is just the snake itself that has collision, and not the empty space in the center of it. I thought that maybe I could just add more collision points, but I am afraid that might lag the game.

A Tilemap with the solid behavior might work better.

So how do I do that? I imported the tile map but I have not used it before, so what do I do?

You create a tile texture at a resolution that would work for what you are doing, and draw, or erase the track, depending on how you want it to work.

Just remember any tile that is filled would act as solid.

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