Psychologically, dreaming of an unknown deceased person may reflect the end of a life phase, while dreaming of someone you knew could signify unresolved emotions or the struggle to move on. Such dreams may also represent suppressed feelings or broken connections.
If the deceased plays a major role in your dream, it could indicate lingering guilt or unfinished business. Receiving advice from them may reflect your need for guidance and reassurance. These dreams often bring comfort, especially when feeling vulnerable.