This is the 14366th most frequent Turkish word.
olunmaz
"Olunmaz" means "cannot be/become" or "is not to be/become."
In this sentence, 'olunmaz' is used to indicate impossibility or the innate nature of leadership rather than something attainable through effort.
Lider olunmaz, lider doğulur.
One doesn't become a leader; they are born a leader.
Here, 'olunmaz' emphasizes that teaching is more about the feeling and connection rather than just the profession or title.
Öğretmen olunmaz, öğretmen gibi hissedilir.
One doesn't become a teacher; one feels like a teacher.
In this context, 'olunmaz' again highlights the idea of beauty being an intrinsic quality rather than something that is acquired.