Dissatisfaction of service

We booked accommodations at this place in November 2020 via Booking.com and we made full payment on the 29 December 2020. After the 1st week of January 3 members of 6 contact Covid-19 in different times and we called the Host to inform her about the situation we in and that we will like to reschedule the host said that we should produce proof of results and we did. After disclosing the results the host said she cannot allow us to reschedule what she can do is accommodate us with following Covid-19 protocols. We were not happy of the verdict because we do not wish to be in contact with other people on vist and put they health at risk. We disclosed our private information with the purpose of protecting other citizen but unfortunately the host has no intention of doing so. We do not wish to lose our money nor put other people at risk. We need assistance in terms of this matter.