Random does not mean fair
A game may be random while still giving the operator a mathematical advantage through payouts or rules.
Probability before intuition
A possible result is not necessarily a likely result. Rules, house edge, variance and independence help explain why short-term impressions can be misleading.

8 detailed illustrated guides
Poker, blackjack, roulette, slots, baccarat, craps, sports betting and racing: play sequence, payments, variants and mathematical risk.
A game may be random while still giving the operator a mathematical advantage through payouts or rules.
A published return percentage is calculated across a very large volume of play. It predicts neither the next spin nor one person’s result.
Changing stake sizes can change volatility and the speed of losses, but not transform negative expectation into a reliable investment.