There are some ways to earn money without paicing bets and I would like to talk about some of them.
First and the main one is the affiliate/referal programas, this way by sharing your affiliate link you will get some incom from the users bets, isn't easy to get good affiliate (users who bet a lot) but with one high roller you could make a descent amount.
It is important to keep in mind that these programs may have their own limitations and requirements, and do not always guarantee a stable income without the risks associated with the casino bets themselves.