Im on the Mac version of the game, and it wont let me save. Also whenever i enter the options menu the whole game freezes.

I have the same issue on the Mac version of the game.

EDITED TO ADD: I found the solution! I'm used to playing RenPy games, which save data in the RenPy folder in your user library. This is a Unity game, and in order for it to save settings/save games, it has to be moved to the Applications folder.