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

https://wiki-square.win/index.php/How_Do_I_Explain_Variance_to_Someone_Who_Hates_Statistics%3F

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