Dreams can often reflect our thoughts, feelings, and experiences in waking life. Let's break down the elements of your dream for interpretation:

1. Club and Dancing with Friends: This part of the dream suggests a desire for social connection and joy. Maddie and Toni may represent aspects of your life where you seek fun and companionship. It could indicate that you are looking forward to or longing for moments of celebration and social interaction.
2. Losing Miaochi and Feeling Something is Wrong: Losing someone or something important in a dream can symbolize feelings of insecurity or fear of losing control in your life. It might reflect worries about relationships or responsibilities that feel overwhelming.
3. Car Trouble in Grandma's Garage: Cars often symbolize our personal drive and direction in life. Having trouble starting the car may indicate feelings of being stuck or unable to move forward in a certain aspect of your life. The fact that it’s in your grandma’s garage might suggest that you’re reflecting on your past or family influences that are currently affecting your situation.
4. Driving Out of Control: This part of the dream highlights feelings of anxiety or a lack of control in your life. It could signify that you are navigating through a chaotic situation or that you feel overwhelmed by circumstances beyond your control.
5. Big Moon: The moon can symbolize intuition, emotions, and the subconscious. A big moon might indicate heightened emotions or clarity regarding a situation in your life.
6. Cat Covered in Poop and Dying: This is a distressing image and may reflect feelings of helplessness or concern about a situation that feels dirty or neglected. Cats often symbolize independence or feminine energy, and seeing one in distress could signify worries about losing something important or feeling responsible for someone else's well-being.
7. Comforting Your Cat with Your Brother: This suggests a supportive relationship with your brother and a desire to take care of those you love. It also indicates a need for emotional support during difficult times.

Overall, this dream seems to reflect feelings of being overwhelmed, fears of losing control, and a need for connection and support. Consider what aspects of your life currently feel chaotic or uncertain, and think about how you can regain a sense of control or seek support from those you trust.