I died without being logged into the realm and lost a lot of stuff

Logged off with stuff in my inventory. A week later I logged back into the realm my friends and I are playing on and it’s like I died. Lost all my levels and all my stuff in my inventory.

Lost...

maxed out Diamond sword - unbreaking 3, looting 3, mending, fire expect 2, sharpness 5

maxed out Diamond pickaxe - Unbreaking 3, silk touch, efficiency 5, mending

37 xp levels

a Diamond shovel with efficiency 4 and unbreaking 3

 

all my Diamond armor that had enchantments on them as well.