World crashes to Xbox home screen with autosave or "save and exit"

• The crash happens a few moments after the autosave icon disappears. The autosave begins a few seconds after I load the world. The game completely crashes to the Xbox home screen once autosave is complete. Also, when I attempt to exit and save immediately after loading the map – before the autosave icon appears – the game will crash anyway to the Xbox home screen after a few moments of the "Saving World" message
• I am able to travel a short distance before the game crashes while the autosave icon is present. The distance I traveled with the autosave icon flashing is saved but not the distance I travel moments before the crash
• I am able to use items and eat food while the autosave icon is present. I cannot after the icon disappears moments before the crash
• I noticed a few glitches happening days prior to the current issue. First, on rare occasions I would break a block and instead of the "breaking animation" it would just disappear. Then a quick moment later the breaking animation would happen, and I could pick up the block. The time I was playing just before the crashing, this was happening maybe every 4th or 5th block.
• This is a very old survival world, about 8 years, ~230 Mb. This is the only problem I've ever had with it, and it has survived every update.

• I have no mods except the "natural texture pack" that came standard with the game, which I've used since I started. I do not use any of the "experimental content" that's available. I didn't do anything different or change any setting.

• I have a superflat creative world that does not crash which is also very old. I also loaded up a random survivor world from 2017 that does not crash either. New worlds do not crash. This one map is the only one that crashes.

• I've tried clearing my Xbox's cache by holding down the power button for 5 seconds. I've uninstalled and reinstalled the game.

• Minecraft was on my external hard drive, and I tried moving the game over to internal storage to see if that would help. It didn't. The same crash is occurring

• I have tried playing the game offline. The same crash occurs

Is my world corrupted? Is this unfixable? What's making me the most upset is that I didn't do anything differently.

Any help would be very appreciated.