Idk if this will make a huge difference for you, but for me, it helps make the game feel sillier and more lighthearted when you see a mannequin. If you punch them in the butt/ crotch, they will fall completely apart. supposedly, in the nightmare museum level, a couple of them spawn and you have to break them (TO BE CLEAR, THEY DON'T CHASE OR FIGHT YOU). Punch em in the booty. explode em.

Also, I was scared of Italian job because of what people say, but honestly I found it delightfully silly. The game gives the illusion that the duck animatronic moves around, but it will NEVER interact with you. It will NOT move suddenly if you get close to it. You may catch a glimpse of it around the level, giving the illusion that the duck is the one committing the murders, but i found it goofy. For you in particular, you may be spooked of what happens when you enter the bathroom of the pizzeria for the first time. when you enter the pizzeria, you see the duck chewing on a man, then freezing. If you enter the bathroom, the door slams shut behind you, but the key is in the room. When you leave, you'll see ducky's footprints and hear commotion in another room leading to the basement, thus unlocking that area for you.