The first dream: the carriage is the image of the emotional space, where your own feelings are. It can represent a home, but more accurately, it is a gathering space for all your relatives! In the dream, you are a child, you get what you want in the dream, and you get what you didn't expect.
From the general theory of dream interpretation, this dream is the achievement of a will. But from the perspective of psychoanalysis, this dream is a kind of self-retrogression, because you are emotionally hurt and lacking, so you pursue this retrogression in your dream and seek satisfaction in your childhood.
The second dream: my brother's home, my brother doesn't live with you, and there is a second father. I think your parents are divorced. And in your dream, you can get emotional care in your brother's home, which is also a wish. In the dream, the importance of the second dad is highlighted. I think you should be a girl, but generally only a few people have colorful dreams, and most of these dreamers are girls!
The third dream: Dream back to campus. Generally speaking, people only dream of going back to campus when they are overtired, because campus usually has our most relaxed and happy time. Where people can relax. Going home is the same, all three dreams have this meaning, so I think you may be frustrated. On campus, there is usually someone's first love. That's what peach blossoms mean, but you find some are dying. This fading is a hint in your heart. You think it's a little emotional!
The complexity and diversity of family life are more important than anyone else in your heart. The emotional blow is more than you can bear. But you should face your feelings correctly and don't rely too much on someone's emotional contribution. Because some people, you are casting pearls before swine. Don't back down, be brave!