As I posted on this thread about my strategy of betting against my favorite team, another strategy I used is betting against my intuition. LOL. In the last World Cup, I only bet against who I thought would win, and luckily, I won so many games. I didn't expect that, but I think I will try again sometime in the future. 
I have similar periods too, everything I bet ends up opposite to my prediction... And at those moments I think that I would do much better if I bet on the total opposite of my intuition, but unlike you, I have never tried/tested this method. It's not like didn't think about it, but I'm not sure if that could work for me, sometimes when something doesn't work it just doesn't work.
If there's one thing I have learned after all these years of betting, it's that there is no one strategy that always works. Each strategy is good in its own way and each of them has periods when it works and periods when it doesn't. So the best thing we can do is to try to mix different strategies and to somehow try to be unpredictable as much as possible.
)) I will bet for Man City (yes, I'm an Arsenal fan). I agree, knowing different kinds of strategy and finding the best one that fits on your attitude and discipline helps a lot in terms of getting a better chance of winning, though it's not an assurance but it can pattern out your strategy and make it work for you, there are many available information you just need to work it out and find a way to fit yourself with what you think is best.
Knowing the system and the game that you'll be using your strategy will be an advantage, all you need to do is to be updated and balance the time and the money that you'll going to use.
It's best to find the sports or the club that you are following and try using the strategy that you think will be fit and keep practicing it from time to time, with your patience, it will work along the way.