Not only that, if you load a dice by 1% and roll it 10,000 times, you might still lose. You need to detect that the dice is loaded somehow even though the results are poor, and that eventually you will get a winning streak.
Also understanding of odds, management of your bet sizes (Kelly criterion).
You don't make money by having amazing unique insight, you make money by finding soft players and milking them for money.
All the retail investors and day traders are the amateur players thinking they are decent but really are just getting milked