Why does Apple TV not allow a person to go back episodes? If I fall asleep during a series, any series, it will not allow me to go back any episodes.

On what device and model is this happening?

1. You may navigate to a show’s Details page by selecting the show anywhere but Up Next. You will find all episodes listed there.
2. Or: You may navigate to a show’s Details page through Up Next with a special action, to suppress starting the listed episode immediately. How that is done, differs a bit by device (and may change in details over time). On the Apple TV box, on smart TVs, and on third party streaming devices, you can click-and-hold the tile in Up Next until a contextual menu pops up, then select Go to Show. On Mac TV app, see (1). On iPhone and iPad, click (⋯) below the episode tile in Up Next, then select Go to show. On the web, click (⋯) on the episode tile in Up Next, then select View Details [for that specific episode], then click the link for the show name in the upper left corner.