You'd better face north.
Feng Shui can't explain science. See the floor plan (building) and the detailed introduction of the house (surrounding environment, floor, unit, apartment type, indoor layout, furniture), you can know the wealth, marriage, children, disasters or diseases at home, and you can also adjust the geomantic omen to avoid disasters!
It is not surprising to doubt Feng Shui if you don't understand it, but people who just talk nonsense and don't understand it are too ignorant. There is a reason to exist!