Hello @Elizabeth2874
You are not the only person posting about this problem on the CC. You find yourself in the new "room category" that Airbnb has promoted this month and from what I can gather, it is AI that chooses which photo to put forward for your listing which is creating quite a lot of frustration amongst hosts.
You should have a feedback button so feel free to use and any other means to give your view.
You could try deleting the photo you don't want as your cover photo and see if that changes something and then if AI chooses one you do like, put it back on! Trying to think of a way to fool AI but am not a techie person!!
Good luck and let us know if it works!
All the best
Joëlle