It can be very hard to find soccer, or football, betting systems that actually work. However, I assure you that it is possible and can be done but you will need the right attitude. I have found many systems that work nicely to make me a regular profit i really know it can be done from quality experience.
The main thing you need to remember is gambling is often a long term game. So many people will buy a system and only use it for a number of matches before they provide up. The alternative can happen too whereby find a system, win for a while but when they start to lose they only give it up. You should remember that its not all systems win continuously. In fact there is not one soccer betting system on earth that has a 100% win rate. Which is complete fiction.
Precisely what you should do is buy or even create your own soccer betting systems and try them to get a certain amount of your energy. I would even suggest you don't even use it with actual money until you have trialled it over at least 100 matches. Even so you should continue but be careful and only up the stakes if you're able to see a long-term consistent profit.
I took an entire season simply trialling different systems and eventually I found one or two that worked for me and I started along with them in the following season. I now make my living purely from betting on sports. There are soccer betting systems that work, it just takes effort to make them work!