A card game played alone is traditionally read as self-reliance and quiet order. It may also hint at loneliness, or at a problem you feel you must sort out without help.
Does the traditional reading fit your dream, or did it mean something else to you?
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.