What are the taboos of home office feng shui?

There are some taboos on the desk, for example, you can't turn your back on the door or face it directly. You should have a seat by the wall, preferably not by the window.

If there is a bathroom next to the office room or study, don't lean your desk against the bathroom wall! ? Please look at the picture:

Desk facing the window+next to the door = unable to concentrate+bad luck!

The desk is facing away from the door, so I can't concentrate.

The desk is facing the bathroom wall, bad luck+money!

The door rushed at the desk, bad luck!