I once farmed a raid several times a day for 3 weeks to get a pair of pants."Why do we keep getting drops we don't want?"
Such is the way of RNG. Many such cases. Gamers farming for items all over the world would also like to ask that question.
Y'know what, Luce's skill increases her luck, but does it explicitly say only good luck is boosted?
Anyway, seems an encounter with thuggish-looking dudes is going to happen soon.