Why sometimes some Materiales of blender are not work in unity.

I use Blender for modelling my games. Then I export them to unity. But when I add Glass BSDF or Emission for the blender Material and I export it to unity. There was no Emission or Glass BSDF in unity. How can I solve this issue?

I use blender 2.931.
My Unity version is 2021.1.15f1 .
It is a personal one.

Unfortunately, as far as I know, theyre incompatible. Best you can do is bake the material into texture maps and then configure a material in Unity that uses those.