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

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

RTP is a long-run average, not a promise for one session: 96% RTP means a 4% house edge over time. Volatility describes how uneven results can be. A short run can go far above or below the average, so don’t treat past results as a forecast.