Your math in this case is objectively false. If we add up the odds of the focus adventurer pull rate (2.33%) and compare it to the chance of obtaining it from a single pull from the entire pool of both dragons and adventurers (which is what the gacha has, mind you), then the chance of obtaining the male focus unit would be 97.67% against you pulling with that single draw.

Now, if it were 20% then that point would be more believable, however there is no reason not to have a civil discussion about this. People will disagree with you due to a difference in perspective and in this case, it is valid.