Freeze issuse death

I was playing on my world with rtx on the beta and collected some items like blaze rods and a wither skeleton head.I was heading back to the portal to go back to the overworld with 1 bar of hunger and when i went in the portal the game froze.I waited like 5 minutes and nothing happend,so i close minecraft and booted it back up.When i went into my world again i was in the overworld in gravel at some random coordonates and instantly died.After that i couldnt find my items back.