Sorry to hear you’ve had coins stolen, unfortunately there is no way to recover them, the best anybody can do is help you work out how someone got access to your coins.
There seems to be a spate of these lately, but no answers . Some time ago there was another episode of wallets being emptied, that was traced to a block chain downloader software, which when run recovered the 24 words and sent them to the perpetrator, who at a later date emptied all the wallets. Have you ever run such software?
Have used any other software, checked for viruses, does anybody else have access to the computer, either remotely or physically?
If you can’t work out how the keys or wallet was accessed, then the best course of action is to wipe the PC, or be absolutely certain there is nothing untoward on it. Create a new wallet, and create new plots. Then create a cold wallet on a secure computer, and send your reward to that.
See also this thread for useful inflation.