Mechanical wreckage is created by DIASAI. I just edited a few details to make it comfortable to work in Blender.
STL (Stereolithography, filesize: 18.4 MB), OBJ (OBJ, filesize: 18.8 MB), GLTF (glTF, filesize: 19.1 MB), BLEND (Blender, filesize: 21.4 MB), PNG (PNG, filesize: 17.5 MB), FBX (Autodesk FBX, filesize: 21.8 MB)