at the point where i have to gather superior potions in my missions.

waited for today as im on the void potions mission, won 6 (2 then 1 then 3) superior void potions... only 4 regiesteres for the mission.

I now have to wait a week to grind void keep for 1 potion.

not great

Unfortunately its all RNG

You are missing the point, I know it's RNG, but I won 6 potions and only 4 registered for the mission