RTP is a long-run average: 96% RTP means a 4% house edge, not a promised return...

https://www.bookmark-zulu.win/rtp-is-a-long-run-average-not-a-session-forecast-96-rtp-means-a-4-house

RTP is a long-run average: 96% RTP means a 4% house edge, not a promised return in your session. Volatility affects how often and how much wins land. Short-run results can swing widely, so you may win or lose more than the average suggests.