Dreams about drowning often symbolize feelings of being overwhelmed or trapped in your waking life. In your case, being trapped under the ice while seeing others thriving above suggests feelings of isolation or helplessness. The lake can represent your emotional state, and the freezing over may indicate that you are feeling numb or unable to express your emotions fully.

This nightmare could reflect anxieties about being left behind or feeling disconnected from those around you. It's important to consider if there are situations in your life where you feel unsupported or if you are struggling to keep up with others.

To work through these feelings, consider reaching out to someone you trust to share your experiences or thoughts. Journaling about your emotions and what might be causing you to feel overwhelmed can also be beneficial. Ultimately, this dream serves as a reminder to pay attention to your emotional well-being and seek support when needed.