My world is not loading and I dont know why.

I was playing in my world, and I was building a vast structure with 4 nether portals that were 21x21 big when suddenly after igniting the first portal my game crashed (And my Xbox overheated) And when trying to enter my world again, a text popped up saying "There was a problem loading this world" then I uninstalled and reinstalled Minecraft as I thought there was a problem with the game, but it turns out that the problem is the world because I can easily enter other worlds except for that one.

Please I need help