When you play online slots, the RTP tells you how much you can expect to get...

https://fantasynamezone.com/why-players-are-paying-more-attention-to-how-online-games-actually-work/

When you play online slots, the RTP tells you how much you can expect to get back over time—usually around 95% or higher. Volatility is all about risk versus reward, showing if wins come small and steady or big but rare