The issue is that I can see through the sides of my model.
I’ve tried the solidify modifier, dealing with the face orientation, double siding the object, and fixing the topology. Nothing works.
I’m not an expert in this field, but this usually works.
Set the material to plastic just to test, turn down the reflectance and transparency to 0 or minimum, then turn on DoubleSided.
After doing the ending 2 steps, try interacting with other materials and properties.
This is what usually works for me.