RTP is a game’s long-run payback rate: 96% RTP means a 4% house edge on...

https://penelopesultimateblogs.hexaforgey.com/posts/how-is-casino-volatility-similar-to-portfolio-risk

RTP is a game’s long-run payback rate: 96% RTP means a 4% house edge on average. Volatility describes how often and how much wins vary. In a short session, results can swing sharply either way; the long-run average won’t predict your outcome.