RTP is a long-run average: 96% RTP means a 4% house edge, not a promise for one...

https://www.deltabookmarks.win/rtp-is-a-long-run-average-not-a-promise-for-one-session-96-rtp-means-a-4

RTP is a long-run average: 96% RTP means a 4% house edge, not a promise for one session. Volatility affects the size and frequency of swings. Short-run results can vary sharply, so you may lose more than expected.