@Valentina32
One way to help fill your calendar would be to lower your price via a Custom Promotion ("promotion" typically means you are offering a discount which means lowering your price). If you use a Custom Promotion, they can "stack" on top of other discounts you have set, like early bird or last minute discounts. If you create a custom promotion, double check how it is being applied by trying to book your place as a guest:
Use a Custom Promotion
https://www.airbnb.com/help/article/2982
Min Stay
You could lower your min stay to 3nights instead of 4nights in order to be seen more in guest searches.
Overall Review Score
I would also work on getting your review rating higher...right now it is 4.72? Guests mentioned cleanliness issues, lack of amenities and AC not being adequate.