@Hannah984 It's easy to "verify" an account with a fake or stolen ID - it adds a bit of friction for scammers but certainly doesn't prevent them.
I recommend changing your calendar settings and setting a much lower maximum length of stay (say, 2 weeks). You need to build up some reviews fast to get your listing off the ground, and these "extended stay" bookings risk turning into squatter situations. Airbnb only collects the first month upfront, with no deposit, and if the guest refuses to pay beyond that, you're stuck with what could be a long and costly eviction process and risk your home being destroyed.