Topics like this have been created very frequently, there are variety of different sites to gather many realistic materials. You could always search different texture packs in the toolbox you’ll find some useful textures and see whatever suits your liking but you’ll be better off finding other textures to make your build have that sort of realistic approach In a kind of way. There’s a few textures sites that could achieve those realistic looks.
Here is a forum post that leaves information about that specific site if you cant find a texture your looking for you could always make your own custom materials or using free custom textures. I would consider checking out this thread here: