You all need to educate yourself on probabilities. The odds aren’t based on the number of packs you open, it’s a 1:50 chance for that specific pack. Basic probability lesson is a coin flip, before you flip, it’s a 50/50 chance at heads, next coin flip, it’s still a 50/50 chance to get heads. You could flip tails 100 times in a row and the chance of heads on the next flip is still 50/50.
Some people will pull diamonds frequently, some will never seem to pull diamonds. When you look at the statistical data over millions of transactions, I can almost guarantee you that the probability comes out to 1:50 for each pack to pull a diamond.