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

https://www.bust-bookmark.win/rtp-is-a-game-s-long-run-payback-rate-96-rtp-means-a-4-house-edge-on

RTP is a long-run average, not a session promise: at 96% RTP, the house edge is 4%. Volatility describes how uneven results can be. Short sessions can swing sharply, and past outcomes don’t predict the next spin.