Stuck on how to do collision for my map

Hi everyone, this may not seem very question worthy, but here goes. I’m working on a game where the entire bulk of the map is this roulette wheel mesh. As such, I need the collision to be perfect. Is there a good way to get collisions for a mesh this odd, or will I just have to painstakingly make a lot of box colliders? I have already tried auto convex with maximum detail, and it still had some holes that the player could fall through. Thanks!

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