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

https://www.bravobookmarks.win/rtp-is-a-long-run-average-not-a-session-promise-96-rtp-means-a-4-house-edge

RTP is a long-run average, not a promise for one session: 96% RTP means a 4% house edge over time. Volatility shapes how wins and losses may be spaced. In the short run, results can swing widely, so you can lose more than the average suggests.