family sharing apple tv

if I upload a movie to Apple TV app on my Mac

If you mean streaming local files, like home videos, Apple calls that Home Sharing, not Family Sharing (which is a different service).

One would access the home shared content through the Computers app on Apple TV box, not through the TV app on Apple TV box.

Use Home Sharing to share media from a computer to other devices - Apple Support

Stream content with Home Sharing on Apple TV - Apple TV user guide - Apple Support

if it was me then I would verify that the appleID active on the appletv box was the same one which the movie was purchased with