Dreams about rollercoasters often symbolize the ups and downs of life, representing emotions, stress, or a feeling of being out of control. In your dream, the broken rollercoaster could signify a situation in your waking life that feels chaotic or dangerous, possibly related to responsibilities or relationships where you feel the weight of others' well-being.

Your attempt to stop the rollercoaster suggests a desire to take control and protect those around you, indicating a strong sense of responsibility. This may reflect anxiety about not being able to prevent negative outcomes for yourself or others, especially if you feel that time is running out or that a situation is escalating.

Consider reflecting on areas in your life where you feel overwhelmed or where you believe you have a significant influence over others. It might be helpful to explore whether you are taking on too much responsibility or if there are situations that require you to step back and allow others to manage their own challenges.

Overall, this dream highlights your protective instincts but also points to the need for balance and recognizing your limits. It might be beneficial to communicate with those around you about your feelings and concerns, helping to alleviate some of the pressure you feel to "save" them.