Every time I try to start up the game, the game freezes on the loading screen and I get an Error Code Marmot. I’ve gone to the bungie help website and followed their instructions. I am running it with an Xbox one so I closed the program, unplugged the device for 5+ minutes, and started it again, only for it to fail the same way. I then deleted the game and redownloaded (which took forever) and that didn’t fix the issue. It was working just an hour before this initially happened, I don’t know why??? Please help a fellow guardian out! I also tried clearing persistent blue ray storage as the bungie website said but no luck. My Xbox also has no problem running my other games.
Sounds like your internal drive for your Xbox One is faulty, which isn't surprising given the age of the Xbox One (12) and the fact hard-drives only have a lifespan of about 5 years. Just because you have no problems with other games does not mean your device is fault free.
You may need to either take your console in for repair (very costly) or upgrade to the modern Xbox Series S|X consoles (cheaper option).