Disappointment in a dream points to an expectation that was quietly carried. Tradition reads it as a chance to see what you had been hoping for.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.