for those arreas with high density of spell casting opponents you need to make sure you smax the resistances as recommended . you will find it easier to advance/farm in the worldstone keep than outside in the cold

you may use any other weapon to make that RW untill you find a sacred war scepter , and after you find one , you can just unsocket the rune /jewels and remake the RW .
as for farming places , i recommend terror Fauztinville as you will need a lot of shrines in order to craft that shield and gloves .
i believe that for now you are just unlucky , i personaly found arround 8 runes between 90 and 100 (got 2x ON) with the paladin , i also found a lot of sacred gear : greaves/gauntlets/sacred pally shields/sacred pally helms / no sacred Ancient armor , just inferior ones , but i'm still hoping my luck will get better