as someone who has been going int builds for a while it takes some getting used to what you need to do for the build but its absolutely op even in early game, a stun baton with a repulsor mod and 1 or 2 sledge turrets and you can take on even the strongest hordes with never needing a ranged...
this may be why you're having trouble finding them, they massively nerfed quests as to make them more of a side thing, the main thing you should be doing is looting poi's, with a focus on looting poi's while doing only a few quests at day 14 i have over 50 legendary parts and ive used some in...