RTP describes the share of stakes a game is designed to return over a very...
https://emilianosexcellentcolumn.scriblorax.com/posts/what-s-the-cleanest-way-to-describe-casino-games-as-products
RTP describes the share of stakes a game is designed to return over a very large number of plays; the house edge is the remainder. A 96% RTP means a 4% house edge on average—not a promise about one session