RTP is a game’s long-run return: 96% RTP means a 4% house edge on average, not...

https://varimail.com/articles/does-session-timing-matter-in-online-casinos/

RTP is a game’s long-run return: 96% RTP means a 4% house edge on average, not a session guarantee. Volatility affects how wins and losses are spaced. Short sessions can swing sharply, so your results may differ widely from the average.