RTP is a long-run average, not a session promise: 96% RTP means a 4% house edge...

https://bravo-wiki.win/index.php/Can_Bankroll_Management_Make_a_Negative_EV_Game_Profitable%3F

RTP is a long-run average, not a session promise: 96% RTP means a 4% house edge over time. Volatility shapes how wins and losses arrive. In a short session, results can differ sharply from the average; past outcomes don’t predict the next one.