Check out Rubber tiles 500x500x20 Low-poly 3D model on CGTrader for $5. High-quality mesh by amazingzonder: 18 polys, 24 vertices. PBR, Textured, UV Mapped.
STL (Stereolithography, filesize: 449 Bytes), OBJ (OBJ, filesize: 1.18 KB), FBX (Autodesk FBX, filesize: 45.9 KB), PNG (PNG, filesize: 74.4 MB), BLEND (Blender, filesize: 143 KB)