Check out Robot wearing helmet Low-poly 3D model on CGTrader for $10. High-quality mesh by shukurovshukurov06: 169717 polys, 171284 vertices. PBR.
OBJ (OBJ, filesize: 18.3 MB), FBX (Autodesk FBX, filesize: 18.3 MB), BLEND (Blender, filesize: 18.3 MB)