It’s best to not focus on behaviour of previous bosses you might not have got on with; you’ll look like you’re harbouring resentment and that won’t work in your favour. It is however, fine to praise the traits of a good leader or manager you’ve had in the past. Think about what traits a good manager has. A good answer would be something along the lines of: “I appreciate when managers and leaders are understanding of the needs of their employees, as well as knowledgeable about their strengths. This builds a strong team.”