The packs are super sketchy. When there's just one pack available and it's 50% odds, it's easy to think, "well, I just got unlucky." But if my math is correct, the odds of getting three 80s out of three is 12.5%, so it's a bit easier to say, "why are so many people getting so unlucky?" I did the one the other day which had like an 80 or 88% for one part of it, and then another which was 50%, and I think there was a third part of the pack. I don't remember exactly. But I pulled the bare minimum for everything, even the 80-ish percentage.
It's just best to figure you're going to get the minimum with any given pack. I should have known better. But the stated odds seemed pretty good.