The first step to being a depressed child is having a sense of the world outside of you. Next, is understanding that humans being are normal and that life could very well exist anywhere. After, is realizing the whole purpose of life is just to live. Lastly, is coming to the conclusion that life is meaningless and that there is no point.
Once a child has gone through all these steps their future is in their hands and they’ll decide what life means to them. I make it seem black and white but as with people there is so many variations. Some will be sad, some will refuse but all of them will ponder death. All will be able to find the true meaning of death but none will be able tell the answer. As long as pondering death is still legal. Suicide will always exist.