My world of 3 years got deleted 45 minutes after i saved and quit please help me , my world is on my 2nd account called crossingcar1547. Idont understand how this could have happened. Both the file and save are gone

hello i experienced an issue on my 2nd aaccount crossingcarl1547.the  world save deleted itself causine me and 12 other people to lose everything invested in the game,please help me ill do anything to get my save back