Gear disapeared from game entirely.

I was heading towards a base in the high hills biome when i fell from a high place (6000 blocks away from original location) and died. As i was walking back those 6000 blocks, the game crashed about 3 times (it made my console turn off completely, 3 times). Eventually i reached the location of my death and all my belongings (that were on me before my death) had been completely despawned from the world. I had: 7 sponges, 1 diamond sword (fire aspect 2, smite 4, knockback 2, mending & looting 3), 10 obsidian, 1 ender chest, 2 water breathing potions (8 minutes duration), approximately 4-5 oak wood, 10-12 red dyes, 1 cartography table, 4 maps (all 4/4, one was fully discovered), 1 water bucket, 30-31 cooked steaks, 1 iron helmet, 1 iron chestplate, 1 leather pants (protection 2), 1 iron boots, 1 spyglass, 1 diamond pickaxe (efficiency 4), 1 stone pickaxe, 1 fire resistance potion (8 minutes duration) & 61 torches. I may have forgotten some coal as well. I created this world in 1.16 but only the first map is generated as such, the rest of the world i hadnt explored before the update has generated normally it seems. I use the mojang steampunk texture pack also on this world.