Save Games Path is
%UserProfile%\Documents\Shadow of the Tomb Raider\<user-id>\
You missed the "Shadow of the Tomb Raider" Folder.
The "remote" Steam Folder listed does not even exist
<Steam-folder>\userdata\<user-id>\750920\remote\
There is a file here <Steam-folder>\userdata\<user-id>\750920\
It is a text readable file, with a name of 8 numbers, and no extension.
It contains a single huge hexadecimal word with a length of 5194 characters, no idea what it's significance may be