I was in a mall with my friend and then suddenly she disappeared and the lights turned red and I was locked in.
Dreams are often symbolic representations of our subconscious thoughts and emotions. In this dream, the mall may represent a familiar or social environment where you feel comfortable or surrounded by people. The disappearance of your friend and the sudden change in atmosphere - with the lights turning red and feeling locked in - could indicate feelings of isolation, insecurity, or being overwhelmed in a situation where you expected support or comfort.
This dream may suggest that you are going through a period of transition or feeling uncertain about your relationships or surroundings. It could be reflecting a fear of losing connections or feeling trapped in a difficult or unfamiliar situation. It may be helpful to explore your feelings and thoughts related to your friendships or current circumstances in order to better understand and address any underlying concerns or anxieties.