[Lost inventory when uploading a survival world]

I fixed it. just made the uploaded survival world the default world.

[Lost inventory when uploading a survival world]

Then how does it ?

[Lost inventory when uploading a survival world]

Hi, I made huge progress on survival me and my friend and switched to Minehut server hosting. downloaded the world from the old server and uploaded it according to the youtube tutorial. but all my inventory items are gone.. how do I get my items back ?
Thanks.