ITEMS DISAPPEAR

WHY, WHY , WHYYYYYYYYYYY

I LITERALLY HAD SO MANY VALUABLE ITEMS, NETHERITE ARMOR WITH PROTECTION 4 AND MENDING AND FULL NETHERITE TOOL ENCHANTED, WHY WHEN I DISCONNECTED MY IETMS DISAPPEARED JUST TELL ME WHYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY

IM REALLY MAD PLEASE FIX THIS AND MY ITEMS ARE ALL GONE NOW I TRIED TO RESTART MINECRAFT BUT NOTHING WORKED 

PLEASE FIX IT AND LET MY ITEMS COME BACK ;(

I play minecraft on ipad version 1.16.201