Minecraft world has disappeared!

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today despite this Marx43

In order to assist you properly please answer the following questions :

Is this happening on Xbox or PC?
If it's on PC, are you playing Bedrock or Java edition?
And, which troubleshooting steps you have done so far to fix this problem
In that way I can advise you different things or how to proceed

Ooh, it's available now?

*Disappears into the world of Minecraft*

Hello There! I highly recommend to follow the troubleshooting steps mentioned on the link bellow :

Troubleshoot game issues on Xbox | Xbox Support

I have now also tried deleting and redownloading Minecraft and soft factory reseting my xbox. Now the world has reappeared but shows up with ‘The world is not fully synced or has been corrupted. Try playing the world on a console where its in a good state and try migrating it again.’ I really don’t want to lose this world and wondering what i could do

Hi Mikey,

With an Xbox one, S, and X all games are saved to the cloud automatically when connected to the internet. The only time they wouldn't be is if you play offline, or don't have any internet. Basically once you clear local saves, when you launch your games
will say syncing data. This is getting the save data from the cloud.

Thanks,

Brad