In the workplace, promotion is often seen as an important sign of career advancement, representing a higher position, greater responsibility, and a better salary package. But despite the many benefits that come with promotion, there are still some people who don't desire or want to pursue it. Everyone wants something different, and not everyone wants to be a strong woman and a leader! Some people may be more focused on work-life balance and worry that they will not be able to balance personal and family time after a promotion. Some people are born with a golden key in their mouths, they are not short of money, they don't want to be responsible, they come out to work just to experience life. Some people have something they are passionate about, and they come out to work just to find something to do, and they don't need to prove their worth through promotion. 
Promotion in the workplace is often accompanied by more responsibilities, higher work pressure, and greater challenges. On the trade-off, they feel that these will affect his quality of life and physical and mental health, and they want to maintain their current state. I don't want to be big every day, and I don't want to go to work every day. 
Perhaps the position he was promoted to was not suitable for his personality development. For example, if a person who is good at technology is allowed to be a manager and lead the team, it is not a promotion or a punishment for him. What he wants is to develop into a professional field and become an expert in the field, rather than wasting time and energy on coordinating work. Of course, sometimes cross-departmental transfers, mismatched project experience, etc., also affect their professional development. For them, an inappropriate promotion is not necessarily a good thing. 
When you move up the ladder, you will inevitably face more complex interpersonal relationships, and you need to be responsible for your superiors and subordinates, both internally and externally. Some people are reluctant to be promoted because they are not qualified for this kind of interpersonal relationship and do not want to be involved in complex personnel battles. For the sake of the three melons and two dates after the promotion, I can't make myself so tired every day. 
Some promotions are made without additional money, or with very little money, but the responsibilities and things to be done as a middle-level leader are doubled. Everyone wants a job with more money and less work, so how many people are willing to be promoted with less money and more things! Everyone is out to work, not to do charity, and they are definitely not willing to do business that is obviously not worth it
Not wanting to be promoted does not mean that a person lacks ambition or career aspirations. It's just that everyone's career planning and life goals are not the same, as long as you don't regret your decision, it doesn't matter if you are promoted or not.