If your friend didn't find your listing, it could be because the dates entered weren't available, or you have a minimum number of nights set, or the friend didn't narrow down the map enough. There are many reasons why our listings don't come up when people search. If you're getting bookings, though, your listing is coming up for those people.
I haven't clicked through your link @Damian260 because it looks like a search link, not a link specific to your listing? Listing links typically have the listing number within the link, like this
https://www.airbnb.com/rooms/23646613
or this
https://www.airbnb.co.uk/rooms/23646613?source_impression_id=p3_1622653495_t5gyr2ayHl5dss0O
If you need to provide someone with a direct link, you can preview and share your listing, or you can perform a Google search using your listing's exact name and find it that way.