Left the world came back days later all my stuff in my inventory and enderchest gone. Used diamonds netherite etc to get new stuff logged off again and had my old stuff back and the new stuff gone.

says: I left my Minecraft world and when I came back a day later to play my whole inventory was empty and I was at spawn. The thing is I didn't die so i don't know why. I made new stuff to make up for my old ones. Even my enderchest was empty. I was confused. I filled up my enderchest again and when I logged off and came back I had my old stuff back. The materials I used for my new stuff were still gone