I don't comprehend: how a person who himself exists due to luck can deny luck?
It was a mere luck that of his father's X and Y Chromosomes, only one, X combined with his mother's X chromosome to bring him in existence; hence a male XX; and, similar explanation can be cited for a girl in which, merely by luck, and among thousands, only her father's Y joined with her mother's X.
If a river is flowing, it is flowing despite the denial of every single species in this world. So, if someone does not believe in Luck, don't believe! but, don't deny also! and if you he is a Muslim, his Imaan is incomplete without believing in good and bad Luck! (AAMANTU BILLAHE wa MALLAIKATE................)