World File Size Limit Preventing me From Playing World

I was playing my world that I started only a couple weeks ago, maybe a month, when I got kicked from it for seemingly no reason. When I tried to click on the world again it said "There is a problem with this world". Only when I exited out of the game completely and came back did it tell me that I didn't have any more space in Minecraft and to delete some worlds to make up space. Which I did, all but four worlds. I would've deleted two more if I was able to delete corrupted worlds because I don't want them and they're taking up space. Why can't I delete them, it's stupid?? 

Now, I only have four worlds; two corrupted worlds, one normal, and the one I am discussing here. I tried to go back into my world, I named it Megaverse so I'll probably call it that from now on, and it still said that I didn't have space. Megaverse is only about 380 MB give or take, so it really isn't that big. If I have an additional 1TB of space for my Xbox, why are my Minecraft worlds too big at less than half of a GB? But I was looking around the internet and looking up solutions and the only one that worked was reinstalling the game. And that worked, for about five minutes. When I got a certain distance away from where I was when I reinstalled the world would not load anymore, even when I waited for a second or walked into the unloaded chunks it still didn't work. So I tried saving and exiting out of the world, and I waited for about 15 minutes of it trying to save, and failing, before I exited out of the game entirely. Then when I tried loading back in it said it had around 2 trillion packs to load out of 1 Like HOW?? It's usually a visual glitch but I waited and waited but the numbers never went away and the bar never went up. I got off and haven't gotten on since.