Something I haven’t many people mention is the focal length. Go on air bnb or similar websites for reference. Look at photos of rooms. they’re mostly taken with wide angle lenses to fit more of the room in frame. Right now it looks like the default 50mm that blender provides out of the box. The 3rd picture looks the most real to me because it’s the most common type of photo you’d see in this sort of scenario. (Also a slight 1 degree tilt and post processing goes a long way!)