Since you likely don't have a spaceship set, you have two free options:
Search for “full indie movie” or “full documentary free” and filter by “Today” or “This week” to find new uploads. Then check the channel bio—legit indie filmmakers usually link to their website or Patreon.
Offers a wide variety of genres, from horror to family-friendly features. 3. Indie and Documentary Hubs
Channels like "Timeless Classic Movies" host gems from the Golden Age of Hollywood.