@Elizabeth2194
Welcome to hosting! It can be a very rewarding experience, but you need to set your expectations appropriately.
First, in any practical sense, there is no real "host guarantee". Don't rely on it, because you're unlikely to successfully get any claim covered, unless it's very small, AND the guest agrees to pay it (which they rarely do). And there's a bit of a gauntlet of steps you must take precisely, or else Airbnb will promptly close the case and refuse to discuss it further.
Also, filing a damage claim has other hazards, such as retaliatory reviews from guests that can be quite damaging to your overall rating. It's a well known flaw in the Airbnb system, and you need to be wise about making damage claims.
You should be covered by an independent policy specifically covering holiday or otherwise "short term" rentals. A normal homeowners insurance is generally inappropriate, and won't likely cover you. Check with your preferred insurance provider to see if they have suitable plans for this.
In general, however, prevention is the best cure. Vet your guests carefully. Be wary of any guest with no history or profile. And especially when they make requests that you feel instinctively are questionable. I would avoid using instant book to begin with. This will require anyone who wants to book your place to first introduce themselves and provides a platform for you to ask questions before they can book it.
Seriously, be careful. There has been a rash of dubious guests in the past year, and they can be very costly, both monetarily, and to your overall ratings.
Most are really great guests. These are the ones you want. But just one bad one can be pretty painful.
Good luck with everything. And always come here if you need help. Lots of very experienced hosts here who've already made all the mistakes 🙃