One of my favourite questions for figuring out a character’s motivations is which qualities they most fear being assigned to them. Are they afraid (consciously or unconsciously) of being seen as stupid? Ungrateful? Weak? Incompetent? Lazy? Cowardly? Intimidating? Like they actually care? etc.
It’s such a fun way to explore into who they are, why they do what they do, what they don’t do out of fear, and how they might be affected by the events of the story. And I love when characters have negative motivations—trying to avoid something (in this case, being seen a particular way) as much as they’re trying to achieve a goal.