Shooting is not a natural thing, it's an acquired skill and being a good shooter doesn't happen by accident.

Having said that, some will pick up the skill faster than others for various reasons and I have found that women tend to be better shooters than men (sooner) because they're more patient and they listen to instruction better. Most men think they know everything and fail to listen effectively thinking they know best and so they don't take instruction and their progress can be slowed because of it. I speak generally here.

Some have a more steady hand, better eyesight and judgement and those people will tend to be better shooters.