3D Graphics - Free assets

Models

Sketchpad

Materials

https://www.creativebloq.com/3d-tips/find-high-res-textures-1232646

AmbientCG

https://ambientcg.com/

Poly Haven

https://polyhaven.com/

Pixar One Twenty Eight

https://renderman.pixar.com/pixar-one-twenty-eight

3DXO

https://www.3dxo.com/textures

Free Textures

https://3dtextures.me/

Total Textures

https://store.3dtotal.com/products/total-textures-19-pack-download-bundle-50-off-download-only

… ( see top link )