hello @Pamela147, you got lovely reviews, congrats!
when I typed in Derrybeg into the search box, your house was the first one on page 1 - so maybe do a search without being logged in, perhaps that makes a difference, and you'll see that you are right at the beginning?
Aside from that, I concur with @Oomesh-Kumarsingh0 who said to update your listing frequently. I just updated mine with new pictures today and I moved from page 2 to the top on page 1 for my area.Not sure that IB will actually make a difference in the viewing or booking. I am experimenting with IB, and it doesn't seem to make a difference.
Several of your guests have mentioned modern updates, but just looking at your pictures, things seem more old fashioned and a bit dark to me. So I am wondering if perhaps you have updated, but not taken new pictures? If not, how about some fine tuning, like adding some color, adding some pictures on the walls, bright pillows and curtains for the living area, colorful bedspread in the master bedroom, perhaps larger lights so one can read in bed, bath mats and colorful towels in the bathroom, etc.. little things that wouldn't cost that much but would really make the place cozy and shine - and be "better" than what your competition has to offer. In any case, I would definitely improve the pictures you have, that could make a big difference.
I believe Airbnb guests do look through losts of listings before they decide where to stay, so ultimately it comes down to the place itself, not so much where in the listing it shows up. Add some pics of the view! Perhaps be a bit more detailed in your description. But also, this time of the year is not the season for Donegal, right? Soo be patient, and it all will work out fine. Good luck and happy hosting!
Annette