My minecraft world was deleted

i was playing in my minecraft world earlier today but a power surge caused my house to loose power for a moment, making my computer cut off mid game (bedrock for windows 10)

 

when i tried to log back onto my word, i noticed that the world that i was playing on was deleted for some reason. i did not go in and delete the world myself, i found it missing after logging back on since my computer turned off due to a power cut

 

how do i get my world back?