Your options are skill-based games and sports betting and from reading the whole post you might end up in sports betting.

I'm not sure how you define "fun" but you should try to find that by yourself. What if you found sports betting boring? No need to do deep research to start sports betting as basic knowledge is enough. Advanced knowledge will learned as long as you keep on doing sports betting.

Doing sports betting for quite some time regularly will now give you a clear answer about the "interesting odds" you are looking at.