Hi Mad, I googled how to find GOG Galaxy saved games, and came up with this:
To find GOG Galaxy saved games, use the "Extras" or "More" menu in the game's library page within the GOG Galaxy client to download cloud saves or find the local folder path, often in
C:\Users\Your_Username\AppData\Local\GOG.com\Galaxy\Applications\ or the game's specific installation directory, looking for !Cloud Sync Backup folders or within AppData folders like \Local\GOG.com\Galaxy\Applications\ and the game's unique ID folder.
I would try the local folder path if you haven't already. Maybe you can find the saved games with that? If not, I will re-google.

I see there are also some YouTube videos on this topic. It can be ridiculously complicated at times to find saved games now, as there isn't the consistency that there once was in terms of where the heck they are.