It’s a game built in Renpy so you’ll need to make a copy of the root folder if you want to keep seeding the original. Renpy will overwrite its files as you play, not just the save files. It’s just the way it is.

Check out https://www.emudeck.com/ if you are looking for emulation which is what I assume you are looking for but if not you can disregard

The internet is getting shittier because the services themselves are getting worse through consolidation and acquisitions instead of improving products so we need to make laws that protect users and giving them means of keeping those services accountable.