Dreaming that the world is a simulation is read as doubt about what is real, or a sense of watching your life from outside. Tradition links it to detachment and a search for what feels genuine.
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.