Minecraft wont start

So what is happening is that Minecraft just closes about 1 - 10 seconds after the Mojang logo appears, before that everything was broken, instead Syncing user data it showed a code for it and the cancel button said gui.cancel, so I restarted my Xbox and it said that Minecraft was updating, but it was super slow, so I decided to hop on YouTube to wait it out then it immediately said it was done so I opened it and it crashed, I kept trying and even turned off mh Xbox but nothing changed, and that leads me to here.