First of all, dreams have nothing to do with bad luck. They are often caused by people's memories during the day or the reappearance of childhood memories, that is, day-to-day thinking and dreams at night. Your dream is a normal dream. Everyone is old. Maybe you start to miss my father, so another image of your father will appear in your dream. This is a dream of missing relatives. The point is not your father's white hair, but how much you miss him. Although we don't miss our loved ones in our daily life during the day, it's hard not to miss them in our dreams. Human nature.
Dreams are unconscious and disorderly links of information in the brain. Some are forgotten by you, and the information on the edge of memory will be called. So many dreams run counter to reality. Doesn't mean anything at all We artificially add personal subjective understanding to form unscientific dream interpretation. But real science shows that dreams have no specific meaning, just an extension of memory or the satisfaction of desire.