doubt about superior people

People who always want to be the best, those who want to stand out are people who have suffered harassment or bullying in the past? I give you an example, a person who is bullied as a child and generates insecurities and makes him believe that he is stupid and will not achieve anything ... then that person will want to stand out, will want to be the best and then when he stands out in something like intelligence if he stood out in intelligence then that person would treat others badly believing himself superior? The bullying they did as a child makes them an insecure person who has to stand out and be superior to others but they have to be superior to others to feel good and then that same person mistreats you and treats you badly and my question as to why they are like that is because in the past they suffered bullying and it generated insecurities?