{JAVA 1.16.4) When loading my survival world, screen gets stuck on "saving world" after trying to load it, Then becomes unresponsive.

So I've had this world for about a month now and I tried to log into it today and here's what happens in order:

1. I load mc of course
2. I go into my Survival World
3. I click on it
4. It generates the world in the little square
5. For about a few seconds it shows "joining world" or something like that
6. lastly, it switches to the "saving world" screen and stays on it until Minecraft just stops responding

Im not sure why this is happening but my explanation is it loaded the world then tried to exit it after, being the cause of the "saving world" screen. Its quite annoying since its the only world Ive ever actually made progress on without quitting so I'd really like it back or something like that. Thanks