RTP and house edge describe the long-run maths, not what you’ll get back in one...

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

RTP and house edge describe the long-run maths, not what you’ll get back in one session: 96% RTP means a 4% house edge on the amount wagered