You may only need this option if the hotel you booked does not have a free cancellation option. Under such conditions, the possibility of payment is not guaranteed, but taking into account the situation that has arisen, the hotel may agree to a meeting.
First, you need to open the page for editing your booking, for more information on how this can be done - in this article.
On the page that opens, click on the "Request to cancel" button:
Here you need to click on the "Request penalty reduction" button, describe the request to cancel without a penalty, and send it.
After sending the request, within a maximum of 48 hours, according to the message, the cancellation must be made.