As of Jackpots, I won them 2 times, 100k and 10k sats, and here's my stats for them: ~
Maybe this is the first time I'm watching a forum member who posted his jackpot winning. I haven't tried much to hit the jackpot but occasionally I have spent few satoshi on the jackpot and I was unlucky in it, as well as in the multiply btc game. However, I won a lot more than you in the free btc roll with 20k+ rolls.