All of my Minecraft save data is gone. Is there any way to restore it back to its original state?

Hello! It seems that recently, for seemingly no reason at all, my one and only Minecraft world was deleted. I do not truly know the cause of the deletion, whether it had been me accidentally deleting the world without noticing or Minecraft itself acting up. Nonetheless, I would be EXTREMELY appreciative if I would be able to get any sort of response/help/tips to possibly find a solution to this issue!