RTP is a long-run return; the house edge is the casino’s statistical share: 96%...

https://www.romeo-bookmarks.win/rtp-is-a-game-s-long-run-average-return-the-house-edge-is-the-share-it-keeps

RTP is a long-run return; the house edge is the casino’s statistical share: 96% RTP = 4% house edge. Volatility affects how wins and losses arrive. In a short session, results can be far from the average—RTP doesn’t guarantee a payout.