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

https://www.novabookmarks.win/rtp-estimates-returns-over-many-plays-96-rtp-4-house-edge-not-a-promise

RTP is a long-run average, not a session promise: 96% RTP means a 4% house edge over time. Volatility shapes how wins and losses arrive. In a short session, results can differ sharply from the average; past outcomes don’t predict the next one.