I've dabbled a bit in online sports betting myself. It's definitely convenient, but you've got to be careful. It's easy to get carried away, and you can end up losing a lot of money if you're not disciplined. You just need to sign up for an account on one of the betting websites
https://1win-bet.ng/ or apps. Then you can deposit money into your account using a credit card, debit card, or other payment methods they accept.