There is no "easy way to get rich" and will never be, all of them are scammers.
What they do is lure a couple people in (10-20) around th world.. they tell 5 people to bet on 1, other 5 on x and rest on 2, and whatever the outcome is they post the winners on their social media saying how happy they are might even comment themselfs because they know no better n say trust this guy he made me money...dont get fooled.
You can never be 100% sure of the outcome, if that was the case there would be no betting cause there would be no money to win, reason there is money to win is because people bet differently.
Only way to bet is to research the teams check for injurys, if they need a win to stay safe, how they been playing the past 3-5 games etc
Good luck and trust ur gut feeling, and remember betting is for entertainment not a jobb or business