RTP describes long-run returns: 96% RTP means a 4% house edge, not a promise...

https://www.runway-bookmarks.win/rtp-describes-the-share-a-game-is-designed-to-return-over-time-the-house-edge

RTP describes long-run returns: 96% RTP means a 4% house edge, not a promise for your session. Volatility affects how wins and losses arrive. Over a short session, results can vary sharply, and your balance may fall quickly.