Did you book with a host that has a strict cancellation policy @Lorenzo345 ?
What was the misunderstanding between the host and yourself that caused you to cancel the booking? I ask because that will have bearing on whether or not you might receive a full refund.
Did you book a long term booking?
Airbnb offers you a 48 hour grace period so if you make a mistake when booking or change your mind you have two days to sort this out and cancel your booking penalty free. After that the host's cancellation policies or long term booking policies kick in..
It's difficult to comment based on the information you have provided. If you can share more detail we can try and advise.