ambientCG is a website that provides very important resources for 3D designers/artists - material library - and the content is quite rich, containing a total of 2180 different assets and keeping counting.
It includes materials, HDRi , Adobe Substance shaders, 3D objects, and more. From the introduction video on his website, you can see that his materials are very delicate and have good quality, and they can produce very realistic effects when used onto the 3D objects.
In a previous project, I used two materials provided by his website, Metal009 for the desktop and concrete034 for the wall, which greatly improved the overall feel.
Before selecting a material, you can preview the effect of the material under different ambient light sources on his website to better judge whether the material is appropriate.
If you often use his materials, you can Donate tor buy him coffee to support his creation. You can also go to his Patreon page and subscribe to his updated materials.
https://www.patreon.com/ambientCG/posts?from=joinForFreeSuccess