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

https://messiahssuperop-eds.image-perth.org/why-do-some-sessions-end-up-way-above-rtp-and-others-way-below

RTP is a long-run average, not a promise for tonight: 96% RTP means a 4% house edge over time. Volatility describes how uneven results may be. In a short session, you can lose more—or win more—than the average suggests.