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. Volatility describes how uneven results may be