Good "installer" app, and save object directory issues

Maybe I shouldn’t ask two questions at once but they may be related. I apologize in advance for my lack of grasp on formal terminology for these things, I have zero education in this field and am working totally alone. When I say “installer” app, I mean the thing that let’s me turn my packaged game into an executable install file.

I have successfully packaged my first game, and made an installer using Inno. The installer seems to run fine and so does the game in all regards except that my save functions don’t do anything anymore. I have a feeling this is due to “expectations” the game has with regards to the directory it wants to save or load these objects from.

Is there a certain way I need to prep my folder directory before creating my installer? Or should j just be using a different application to make the installer? Or is there something else entirely I’m not understanding?