It deletes the world when you save on cloud on Xbox

I'm just confused right now my Xbox is weird

NEVER Choose Cloud Data ESPECIALLY WHEN IT SAYS 0.01KB, it can sometimes have save errors where your cloud storage doesn’t update correctly. Always choose “This Console” and you should be just fine.

Unfortunately, the EULA fix doesn’t work for your case as that you chose an empty save.

Reply 2: 

I just got this today and this is a good example of what Cloud Data looks like when the save is incorrect.

If you get this screen, it is never a good idea to choose The Xbox Network unless if you want to loose all your progress.