The material is not showed in the object

I’m doing the blenderguru’s tutorial on geometry nodes. I copy his material nodes, but my object is colorless and it shouldn’t be colorless. Many people in the comments of the tutorial suggested playing around with the light, but it didn’t work for me. The only thing that show some color in my object was adding color to the glossy and refraction nodes, but it looks weird as if it were a cartoon, and that’s not how it should be.

This is my map node in this link you can see blenderguru’s map and result. I cannot upload more than one embeded image (because I’m a new user)

I checked and double checked and my nodes are the same as his nodes, so I don’t know where’s my problem? Any help is welcome, because I can’t find the solution myself.