I have won 480k sats,

, from free rolls, but it's only 4 times more than you have while you've made like 8 times less rolls, so you are lucky.
Well yeah

It makes sense in that way. I guess I am lucky with the free rolls but not with multiply BTC game.
As of Jackpots, I won them 2 times, 100k and 10k sats, and here's my stats for them:

Also I think you must be missing something regarding Jackpots.

The minimum prize for rolling 8888 has always been 10k sats.
I though jackpot winning is the bigger prizes we win from free rolls but just now got to know it is the 8888 number form multiply BTC game.
Well yeah I never played for the jackpot since it was costly.