According to the laws of physics, interaction works both ways. Ethereal beings in another plane of existence couldn’t rattle doorknobs or interact with the physical world in any way. The Hollywood theme of ghosts doing all manner of things to people while themselves being untouchable is just Hollywood magic.
I hear things in the middle of the night, like someone talking or moving around in my basement. I hear footsteps in the stairway and notice food missing from the refrigerator and dirty dishes in the sink. I hear water running at odd times. Then I bring home carryout from Olive Garden and my GF’s daughter suddenly appears at the table. It’s downright mystifying.