I think as a casual gambler it is better to stay away from basketball because it is more for experts in betting.
This is not for experts only, you can still have fun if you just limit your exposure, bet a small amount and enjoy watching.
Losing is not new, it's normal to gamblers like us, but the entertainment we get as a gambler is really fulfilling.
Consider challenging yourself to get better, only gamble in games that you are familiar with and of course you love watching.