At least you have owned up to the mistake and taken responsibility. Thats a hard thing to swallow. Thats why I immediately insure my drones with StateFarm. 60 a month and covers anything and everything. Theft, Fire, Water, Fly Away, Vandalism, you name it and its covered.
One does not have to have existing coverage with them either to take out a personal articles policy.
Not trying to rub salt in the wound.
One thing you might do is contact DJI with your serial number so that if the Mavic Pro is flown then it will be noted by DJI and perhaps they can contact you. You had to register the drone with DJI before being allowed to fly so that part is done.
It was actually stolen. By the wind!
I like to pop the lid of my coffee and put it on my tailgate. Then see how long I can balance it there while driving down the street.