Why are 3d models not imported correctly into Unity?

Question

Unity

I have a model in the cinema (the first screen), but no matter how I import it into the unit, I select all the formats, I check / uncheck all the boxes in turn, but in the end I see the picture as in the last screenshots, what should I do with it?

Answer 1

It looks like you did not model correctly and your polygons are turned inside out
https://docs.unity3d.com/2019.4/Documentation/Manu...