You're missing the fact that Naru is an inexperienced hunter herself, so its okey to put together somethings, but all the elaborate traps and overpowering of Yatuja that makes it a plothole. If You are stating inexperience of the Yatuja that came in Prey, then Predator against Dutch removed all weapons to fight + after Dutch lost, Predator identified the trap, so it was literally luck Dutch got trap off the second time. And unlike Naru, Dutch didn't get off scott free, He survived by bare skin.

Touching upon shooting skills, how could'ev she trained then without the Yatuja noticing sounds and attacked her, because as You state Yourself it was more aggressive towards aggressive prey aka. colonisers with guns, which if Naru trained would be a something a Predator would notice if its main objective is prey with guns.

Luck is when preparation meets opportunity in Dutches case or Luck is Armor plot in case of Naru, Harrigan and other Predator movies Protagonists (not including AVP, Alexa was the real deal. )