Placed Item in Chest dissappeared after I went exploring and died

Me and my friend went out for exploring. Before we did that I put all of my valuable items in my chest after I died and respawned at my base when I looked at the chest all of the items weren't there. Afterwards I checked all of the chests and my stuff was in none of them. Hoping for a resolution to this problem. Thank you. I'm in 1.17. I don't know which specific version though.