Watching movie trailer without searching

No problem

Upon testing it seems using the TV app brings up the menu page, and if it a title doesn't support extras then it would start the movie. Only the titles that had started playback would be added to the 'up next' queue.

However, if you use the movies app then it will bring you to the details page where you can select the trailer.

If you'd rather that happen from within the TV app then you can give feedback to Apple

Product Feedback - Apple

Ok. So that would be possible on the Apple TV, by using the TV app and going to the Library tab then scrolling through those titles. You could also use the Movies app and then go to the purchased tab. You would still need to to select a movie if you wished to see its trailer, however.

How would you be locating the move if not by searching?