Saves disappeared after save screen bug.

I spent a couple of days building a house and saved multiple times throughout but it’s all gone. When I opened up the save menu the last time it froze kind of it wouldn’t let me save and it also wouldn’t let me out of the save screen. Now I go back into my game and multiple saves are gone. The only recent save is showing is one from a few days ago before I even started the build. I see no option to restore the save or anything like that.