Dreams of being chased, especially by a menacing figure, often reflect feelings of anxiety, fear, or a sense of being overwhelmed in waking life. The humanoid entity with a mask could symbolize an aspect of yourself or a situation that feels threatening or difficult to face. This figure's relentless pursuit may represent unresolved issues or fears that you feel are inescapable.

The settings of a house or school suggest that these fears might be rooted in your personal life or past experiences, potentially linked to your childhood or formative years. The presence of many people indicates that you may feel a lack of support or connection, despite being surrounded by others, which adds to the feeling of isolation.

Your attempts to keep the group together signify a desire for unity and support in times of stress, highlighting your leadership qualities and protective instincts. The frequent loss and gain of people in your dream could reflect the fluctuating nature of relationships in your life, where you may feel uncertain about who you can rely on.

The act of searching for useful items suggests a need to gather resources or tools to cope with challenges you’re facing. Hiding or escaping down stairs may symbolize a desire to retreat or delve deeper into your subconscious to confront your fears.

Overall, this recurring dream may be urging you to confront what is causing you anxiety and to seek support from those around you. It might also be beneficial to reflect on any current situations in your life that feel overwhelming, and consider ways to address them directly rather than running away.