Where Are My Saves?
I heard that some people experienced issues with losing their game save files. I faced a similar situation, worrying that I had to start over.
Here’s a tip: if you open the game from the taskbar after fixing it, it won’t log you into your account (at least on Steam; I’m not familiar with Xbox).
Consequently, there are no save files, as they are tied to your account. However, if you quit the game and then open it from the Steam library, it will log you in, and your save file reappears.
I hope this proves helpful to someone!
TLDR: Open the game from Steam library, not the taskbar, to ensure proper login and save file access.