THIS IS NOT A PROBLEM GO TO SETTINGS > PROFILE AND SELECT EXTERNAL AS A SAVING/LOADING OPTION IF U GO TO UR WORLD'S THEY ARE BACK
Choose external then go to ur world and they are back
Ur worlds arent gone go to settings profile and choose External as file saving option then they are back
THIS IS NOT A PROBLEM GO TO SETTINGS > PROFILE AND SELECT EXTERNAL AS A SAVING/LOADING OPTION IF U GO TO UR WORLD'S THEY ARE BACK