There would be no best site when it comes to gambling because no matter which site you do play if you are unlucky you would really definitely lose.About on your bankroll of 100k sats its never been safe once you deposit it into a particular gambling site. Even you put up 1 BTC wont guarantee you to be safe on gambling.Better out to save that 100k satoshi of yours than on wasting it up on gambling.If you don't like to lose it then better quit on thinking on gambling.