Hi @Melanie1186
as you know we're in the middle of a major recession so demand for bookings have fallen in many areas in the uk.
plus as @Mike-And-Jane0 says many parts of the UK are suffering from saturated markets
have you looked at listing on other platforms and taking direct bookings?
relying on a single marketing channel such as Airbnb is always risky but particularly at a time of falling demand and oversaturated markets
hope things pick up for you