Most recent Save file Deleted after most recent update

I've been playing this particular save file for months. Don't mind me, I'm crashing out a little bit because last night I played my save like any other night, and saw we had an update. So I hit update and went to bed. I woke up this morning to my save file, gone. I've been legit on the verge of tears all day because one little backup folder before last nights update would have fixed everything, but, I did not back it up. So now I'm just here begging for some sort of solution, if this has ever happened to anyone before, and if anyone can help me. It also happens to be the ONLY save deleted. All of the other old saves I don't play are still there. Don't know how to fix this or if I can, but ant advice would be helpful. 😢😢