When you play online slots, the RTP (return to player) tells you the average...

https://www.bookmarking-maze.win/when-you-pick-an-online-slot-knowing-its-rtp-and-volatility-can-save-you-from

When you play online slots, the RTP (return to player) tells you the average payout you can expect over time, usually around 96%. Volatility shows how often and how big those wins might be—high means rarer but bigger wins