Realm keeps crashing on loading screen

I have a feeling it's something wrong with the world itself since when I download a copy and open the world it also crashes. The world is about 1 gigabyte and it was working even after the 1.18 update but, now it keeps crashing. Other people are able to join and it usually crashes before I am able to see anything. A couple days ago when it did load in half my screen was white and the only thing that loaded in was entities then it crashed.