Personally, I don't believe dreams have any particular relevance to anything, and I don't believe they suggest much at all about the psyche of the person experiencing them. They are far too haphazard and random, and quite frequently are nothing more than absurdist reconstructions including partial memories. I see it kinda like if you took a photograph and a recording of everything you have ever experienced, stuck all of that in a giant box, and shook it until three things fell out, you'd get three things that were relevant to you, and would probably evoke some significant memory or suchlike, but they would say absolutely nothing at all about you because they'd be entirely random.
I know I also dream entirely differently depending on my own level of fatigue, and also the sleep environment, and therefore I also believe that dreams having any specific meaning is implausible because they are clearly influenced by factors which can be controlled and manipulated. I also lucid dream from time to time, and since in those cases I am directly influencing the narrative, to me it's clear that this is also perfectly adequate explanation for the non-lucid dreams, i.e. it is very much my brain providing the images and narrative, and not some outside factor, even though things like fatigue and room temperature influence my actual propensity to dream.
Most mornings I'll wake with no recollection of any dreaming whatsoever, but I have experienced recurring dreams from time to time, especially one about my teeth falling out and another about being unable to swing a punch. The former is supposedly a sign of insecurity, but I don't really accept that, and the latter is a simple case of restricted movement because of being bound inside the bedclothes. Frustrating as hell, but nothing remotely "woo" about it.
I think cases of nightmare and so on are distinctly different. I'm not prone to them myself, but I don't think it's any wonder that if a child is in a disturbed, concerned, anxious state about something while they are in a waking state, that will affect their sleep, and also, I have experienced fever dreams while I've been ill with influenza and suchlike. Again, I don't find that remotely surprising. Sleep paralysis three times, first time as a child was terrifying, second and third more a curious, if uncomfortable, experience, because I knew what was going on so it wasn't quite as frightening. But again, Sleep Paralysis is a physiological phenomenon and not really a "dream".