Civilization – How to see where the amenities come from

With Civ 6 replacing happiness with Amenities it also changed how that is awarded. You must now improve the tile to gain it's benefit for the amenity and the second thing to note is that ALL of your amenities will be shared across ALL of your cities automatically. So it would appear that overall, you do not have enough.

Hope this helps.

Edit: 1 luxury resource = 4 amenities.

TL;DR Changes in amenities won't show up until you hit the next turn button.

In Civ 6, each luxury gives you 4 amenities, and extra copies of a particular luxury don't give you more amenities. According to page 50 of the manual:

Only one source of a specific luxury provides amenities, shared with the four neediest cities in your empire.

You don't have precise control over which cities get which amenities, and "neediest" isn't defined anywhere, so I don't know exactly where those amenities are going to go.

In addition, it often takes to UI a long time to update things. In this case, the engine that distributes amenities among your cities only runs after you click end turn, so the UI will definitely not reflect the new one until the next turn.