What you are describing is the perfect example of the fact that you have two kinds of gamblers.I wish that I got to bet against those people. My opponents are corporations who have business relationships with sports media/leagues.
1. The people who gamble as a business with the intent to make a profit. Like any other business this requires knowledge, skill, and a willingness to work hard enough to gain a significant advantage over your competition (the other people putting their money up.)
2. The people who gamble as recreation.
If someone is in the second group they should never gamble money that they aren't willing to lose because in the long run the people in the first group will take it from them.
Developing a system, doing the work needed to keep the inputs into the system accurate, being willing to trust the data over personal biases, having a long term strategy because there will always be short-term failures are all a part of this. These are the things that make it fun for a select group of people but that the majority of people are not willing (if they were able) to do.
Computers have changed things but the basics stay the same. In the past none of the pros had computers, now they all have access to computers. The other factors are what made a difference in the past and do today as well.
A few decades ago when I was in sales I had a good friend who was a very successful gambler. He gambled on football recreationally but his business and where he made his money was betting on the dogs. A couple of times he tried to show me how his system worked but it was clear right away that it took much more work than I was willing to put in.
I have no idea how your system works and don't want to know but I think in college football this year is going to be a tough on for a lot of the pros. The portal has created so much movement that keeping the data accurate is going to be hard.
CU is the extreme end of this but we have so many players not only switching teams but also switching levels. How will grad transfers do stepping up from FCS or G5 to the P5 level, how will guys adapt to new coaches and systems, many of the players going from on P5 to another didn't play much last year due to injury or they were behind somebody so we don't have a lot of solid game time to evaluate them on.
A system can be great but if the inputs are off then the system struggles as well.