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

https://mill-wiki.win/index.php/If_I_Wager_%C2%A3200_on_a_4%25_House_Edge_Game,_What%E2%80%99s_My_Expected_Loss%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.