RTP shows the share of stakes a game is designed to return over a very large...

https://sergiosbestnews.cavandoragh.org/does-96-rtp-mean-i-get-96p-back-for-every-1-tonight

RTP shows the share of stakes a game is designed to return over a very large number of plays; a 96% RTP means a 4% house edge. Neither figure predicts your result in one session