In Android 10, if you take a photo with the stock camera/photos app (which identifies itself as either "Camera" or "Photos" in the app switcher¹) and then view it afterwards, one of the "buttons" is a trash can. If you tap it, the phone prompts you with,
Move to trash? It will be removed from all folders.
[Trashcan] Move to trash
Where is the "trash" that this is being moved to, and how do I access it?
(The device is a Pixel 3a purchased directly from Google, so it should be free of the sort of junk many carriers load onto phones.)
¹The app whose icon is: