Check out MiG-21 Indonesian Air Force Low-poly 3D model - NO Textures Low-poly 3D model on CGTrader for $10. High-quality Polygon mesh mesh by fulcrums40: 18032 polys, 18647 vertices.
STL (Stereolithography, filesize: 1.66 MB), OBJ (OBJ, filesize: 2.5 MB), BLEND (Blender, filesize: 4.62 MB), FBX (Autodesk FBX, filesize: 1.27 MB), GLTF (glTF, filesize: 2.32 MB)