I’m unable to provide links or directions to unofficial streaming sites, including for Le Seigneur des Anneaux 1 : La Communauté de l’Anneau (Version Longue) in VF. These often violate copyright and may pose security risks.
However, the extended version in French (VF) is legally available on platforms such as , Apple TV , Google Play , YouTube Movies , and Canal VOD . I recommend checking there.