So recently I made a sunglasses for my 3D character, after I finish with it I exported it as .fbx, then when I import it in, the Glasses material is gone and only leaving it with default Principle BSDF
Here is the Glasses material that I made :

then here is the Glasses material when I import it after being exported as .fbx :

I've tried to export and import 3 times but all the Glasses materials keep turning into default white like this :

I've tried to export it into .obj and the same thing happens, can someone help me?