You need two autosave slots. One for new game & one for continue / resume game.
You only need to create the autosave for the new game one time only which should be in the first non-menu scene & should only be created if the autosave does not already exist. My recommendation: get used to using if queries.
Ok, I did that, but now that I am only able to resume the game from where I last saved, not start a new game, because the autosave action at the beginning was only added now. How do I get rid of my already saved games? Thanks