When I saved the game it didn't save and the auto save didn't work

I was playing the game for about 6 hours today and when I go to hit save and quit the game wasn't loading and it froze on that screen and when I try to join the world again everything I did today was gone 6 hrs of my work just gone all because the auto save feature wasn't working and the game froze when I after hitting save and quit I already had another bug today so this makes 2 bugs in 1 day both costing me hours of work to be lost it's honestly so infuriating that this happened I spent so long working on my builds over 6hrs and it's now all gone everything I did is gone