Check out Old Roller Coaster Low-poly 3D model on CGTrader for $10. High-quality mesh by chernovaliza88: 13684 polys, 17789 vertices. Textured, UV Mapped.
STL (Stereolithography, filesize: 211 KB), OBJ (OBJ, filesize: 223 KB), FBX (Autodesk FBX, filesize: 1.21 MB), GLTF (glTF, filesize: 95.7 MB), PNG (PNG, filesize: 77.6 MB)