Because I am a fan of sports betting and not casino games, I like free bets, bet boosters, and cashback on the whole turnover, not just the lost bets.
It seems that we can only find RTP in slot games and I have never found RTP in games other than slots.
You are the same as me who prefer sports betting compared to casino games because to be honest I myself have recently started to get a little bored with games and can get more satisfaction from sports betting.
So far the bonus that I always get is unfortunately only cashback and I have never gotten a free bet.
You mentioned an interest in sports betting over casino games - a change is as good as a rest, as they say! There's something satisfying about watching a game play out and seeing if your prediction hits the mark. On the topic of Provably Fair and RTP, they're different beasts in the same jungle. One is all about fairness of the game mechanics (blockchain stuff), the other about the expected payout over time (casino stuff). It's like trying to compare apples and oranges, both fruits but with different tastes!