This is a very poetic dream. Most people don't dream about the environment so clearly. For example, "In the past, the trail was a desert beach. There are some dead trees on the beach with yellow leaves. A gust of wind blew and the leaves trembled with the wind and stuck to the branches. " From this perspective, you are very sensitive and pay attention to details. The correspondence behind this dream, such as caring about others saying that your dialect is not good.
Generally speaking, it is a matter of friendship. The dream environment is your emotional space, steep uphill road, desert beach and yellow leaves, which all reflect your emotional loneliness and sadness.
A good friend's brother is actually just a substitute. I won't say much about your delicate feelings. You need friends, which is the most important thing.