RTP describes the share of stakes a game is expected to return over a very...

https://sofiassplendidblog.inkharbory.com/posts/what-s-the-biggest-misconception-people-have-about-rtp

RTP describes the share of stakes a game is expected to return over a very large number of plays; the house edge is the casino’s corresponding expected share. A 96% RTP means a 4% house edge, not a promise about your session