Question: have any mars rovers been mysteriously destroyed

Hayley and the Mars Rover answered on 27 Nov 2020:

None of the Mars rovers have been mysteriously destroyed! The old rovers that are no longer moving and exploring are still on Mars, and will probably stay there as we have no way of getting them back to Earth. The rovers are only expected to work for a few years and then their solar panels get covered in dust and they can no longer be powered.