Armor Stacking BS

What is happening with this loot system!? I have 6 chest pieces, 7 bracers, 5 hands, 4 pants… every dungeon i do i receive the same loot… what is this BS? No Rings, No Weapon, No Trinkets etc… This is so frustrating and annoying. Also getting 1 piece of gear every 4th dungeon is amazing as well.