No, I do not agree with you. If you know formula of winning the bet in sports gambling please share with us because everyone wants to make big money in sports betting. This is totally nonsense and the chances in sports betting is also 50 50. There is no experience and skills in sports betting. It also depends upon luck. You will select your best team but not sure about the winning.
There are people making money out of sport bets, you may think that it is impossible to obtain some kind of advantage over the house in that game, but it's possible, however it is not easy you need to have a lot of knowledge about a particular game in order to do that, that is why you see that most of those that are successful in sports betting only gamble in one sport, like soccer, tennis, horse racing or whatever game they like the most.
Many of those people have developed their own system to try to find winners among their sports bets and it is going to be impossible for them to share their method, however you see them from time to time sharing their tips and pics in the forum.