I just finish my last texture/material practice, 99 4k PBR materials. I'm going to create a web with more direct downloads in a near future, meanwhile you can find everything in my gumroad. Each pack have a .blend file, so you can apply easily to your project and if you use the Blenderkit addon in Blender you can access the textures there for free too.
I'm planning to keep making textures for a while as part of my study on texturing and environment design, so if you like it and want to support me you can do it on Patreon and you can have access to my Google Drive with 198 textures.
Here is an image with all the materials from this practice: