Hi Marina,
All dreams have meanings, even nightmares have meanings so there is not such a thing as a junk dream. Some are a bit confusing and usually, these dreams are emotional restoration dreams but do not forget, even when a dream is an emotional restoration dream, God can get involved and give us important information in such a dream. Emotional restoration dreams tell us what we are struggling with in life so that we can take action to solve that problem, usually by laying it down at the feet of Jesus so that H can help us with it.