Custom Materials not working!?

When I import an Image, and try to create a material for it, it doesn’t work for me, I can only use Starter content Materials.

Also when I place a Material on any type of mesh, It does not work and the material breaks.

What are the steps you take to create a material? What are the specs on the machine you are using?

asking for specs is extremely redundant, why even ask for that?

Hello Ali, is the image you used seamless? (does it tile/repeat over and over?)
where did you get the image from?
Do you know what PBR, roughness maps, normal maps are?
Did you unwrap the mesh you are using properly?

Can you show us an image of the material you made?
Can you show us an image of the material on the mesh?

If you need a place to upload images, try imgur.