Shulker boxes disappeared after game crashed

I had three Shulker boxes that had really valuable ores like diamonds, netherite etc. And another Shulker box that had elytras and enchanted armor that took me a WEEK of work to get and I was getting ready to place them when suddenly my game froze. So I closed the game and started it up again. I loaded into my world to find that the all three of my Shulker boxes disappeared and lost everything of value that I had in that world. I was having such a good time playing Minecraft until this happened and a weeks work of playing Minecraft just disappeared in a minute. I love the game but after something like this I just don’t want to play anymore.