Betting for real money is always going to be a no-no; it's a gaming site, not a gambling site. There are APIs around to get odds on various games ( https://rapidapi.com/collection/sports-odds-betting-apis ), but there also becomes a question of licensing not only for the odds, but potentially also the sports and teams.

at the moment that is illegal in the State of Oklahoma

I think this is a great idea and would be amazing if there was a way to implement it. One of the CA's (Bren) did hold sports betting from time to time but I know it probably took him a lot of time and planning which was quite a tough job on top of life and CA duties.