@Kate2153
Your listings (3) are all in the search system:
https://www.airbnb.com/s/homes?host_id=42827456&map_toggle=true
Listings will have higher ranking when they meet certain Airbnb criteria, like being Superhost, excellent reviews and much more. (search this community for details)
You can promote your listings outside Airbnb (Social media, private website etc..)
Use the URL to your Homepage (you can add a coverphoto ! )
or have a look at the "share" options at top of listing.