World corruption

Received an error message upon trying to open up a world saying that I had insufficient storage to do that action despite having 500 GB free. I cleared up the game cache like world templates that I didn’t use. It originally didn’t work but after Restarting the game that issue was resolved. I open the world for about 2 minutes then back out to change resource pack. I then try to reopen the world but receive a message that the world is corrupted. It recommended to try to reopen the world, it worked however the last 3-4 hours of progress had been lost and several chunks had been deleted or reverted to their original state.