How to make a bowl?

I am using Unity 2020.3.24f1. I created a 3D mesh of a bowl in Blender 2.93 and imported it to Unity. I added a Mesh Collider to the bowl and selected "Convex", and added a Rigid Body component. I stacked two of the same bowls on top of each other in the scene and hit play, but they did not nest together like bowls in real life. I understand that the reason is because they are concave shapes. After days of Googling and searching the Asset store I have yet to find a solution to create a collider for this bowl. All past solutions are extremely out-of-date and are no longer supported.

Specifically, I want to use this object as a "mixing bowl" for cooking in a game, so I want to be able to place things in the bowl.

I also tried creating my own collider mesh, but again, one is obligated to select "Convex" when using a Mesh Collider, so this didn't fix the problem.

Are there any possible solutions here or am I just royally screwed?