Firstly don't rely on Air Cover it's extremely limited / you need your own home insurance for short term rentals . @Brian3790
Secondly vet guests carefully to ensure they are a good fit for your listing . And remove Instant Book for the first few months until you get used to vetting guests .
thirdly don't leave anything in the house that would upset you if it got broken/stolen
if someone damages your property then you make a claim against your STR insurance or you can consider Air Cover . You need photos/video and quotes for replacement/repairs .