all you need is a little bit more luck than the others and you will be fine. i used to complain a lot and say things like "the tavern and the temple seem to have the same plumbing system because ... " but after initial problems in the beginning with my runes (200m streakS without a yellow) and 50m streaks in tavern from one purple to another seem to be forgotten now. now i doing rather well on my runes and am only desperate for more fragments. about cards from tavern i cant complain either since i seem to be getting one every 10m credits.
i dont believe in the conspiracy theories or into superstitious stuff like "to get a gold hero all you need to do is run 10 times around your table in a tight circle and yell out lout "ABRACADABRA" ".
the best advice to give right now is to simply wait and show patience. better times will come and there is nothing you can do about it to shorten that.

ps: right now i am frustrated about the lab, i often get 700+results but maybe 1 token on the 3-4 shuffles and no plan. cant complain about that either, just have to wait it out and better times will come