This dream appears to reflect some deep-seated feelings about social interactions and the fear of miscommunication, which you mentioned as a concern in your past. Here are some potential interpretations of the key elements in your dream:

1. Muted Colors: The warm and neutral colors of the street may symbolize a desire for comfort and peace in your social environment. It could represent a longing for simplicity and warmth in your interactions, rather than the complexities that can sometimes arise.
2. The Happy Lady: The lady in the red robe may represent someone or something in your life that embodies happiness and confidence. Her transition from a joyful state to a wedding scenario could signify a shift in focus toward commitment and deeper connections, possibly reflecting your own desires or fears regarding relationships.
3. The Wedding Arch: The random wedding arch might symbolize unexpected commitments or social expectations. It could also represent your thoughts about how you engage with significant moments in life and the pressure that can come with them.
4. Social Faux Pas: Your interaction with the lady, where you unintentionally offended her, highlights a fear of being misunderstood or not fitting in socially. This aspect of the dream suggests that despite your confidence in social situations, there might still be an underlying anxiety about saying the wrong thing or not being accepted.
5. Pretending to be "Stupid": This part of the dream indicates a coping mechanism you may have developed to navigate social discomfort. It reflects an internal struggle between wanting to be authentic and fearing judgment. This could also suggest that you sometimes feel the need to downplay your intelligence or awareness in certain situations to avoid conflict or discomfort.

Overall, this dream might be encouraging you to explore your feelings about social interactions and the fears associated with miscommunication. It could be a reminder to embrace your social adeptness and authenticity rather than resorting to self-deprecation or avoidance. Consider reflecting on recent social situations in your life, and think about whether there are areas where you feel a need to express yourself more openly without fear of misunderstanding.