The request "Be My Teacher" is essentially a request for a shortcut to wisdom, asking someone to share the lessons they learned over a lifetime so that you may accelerate your own learning journey. To help you further, are you looking to: for a specific skill (if so, which one?)
At its core, asking someone to be your teacher is an act of vulnerability and admiration.
Unlike required schooling, this request implies a, often self-driven, desire to acquire specific, tailored knowledge.
Seeking guidance on life skills, philosophy, or emotional intelligence from someone who embodies those qualities.