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.