Mood: The mood of the video appears to be melancholic and introspective, with a sense of longing. The theme seems to revolve around heartbreak or a past relationship, as hinted by the title 'Not Again'. The overall emotion conveyed is one of nostalgia and possibly regret.

Environment: The setting of the video seems to be a blend of modern and celestial elements. The background features a starry night sky, which could indicate a sense of vastness and infinity. The presence of a woman in a pink coat, with a cityscape or wooden structure in the background, suggests an urban or contemporary setting. The video may feature a mix of city life and dreamlike or fantastical sequences.