It's not rigged, sometimes it just feels that way because statistics can be counter intuitive. So while you feel like your losing streak should be impossible it is actually statistically likely. For example if I had a hat with 100 balls, half white and half red what would the odds be of me pulling 8 straight red balls out? Same as flipping a coin heads 8 in a row, 1/256. But you are pulling 100 balls out of the hat, so in 100 balls being pulled you have 93 chances to pull 8 in a row and what once seemed impossible (getting 8 in a row) now is a 30% likely hood.
Long story short the games are not rigged, they are provably fair. You can test the math out yourself if you are concerned though, it stacks up.