I keep trying to press the save button, but when I leave to the main menu it doesn't register any saves? I can't really play the game without it saving properly otherwise I'd just lose all my progress and have to go through it all over again
The game's save system activates when you do certain daily quests and you get a "tired" notification. The moment you get this notification you have to go to your room, to your bed to sleep and there you can save the game. If you don't understand, please write again. Have a nice day!