The only way you're ever going to come up with a truly fruitful strategy in trading is by yourself in the end. No sane person would sell or give away a solid, working strategy for cheap when that person can make the strategy work for him/herself. This is where there's both luck and skill involved- it might take you months to make a good working strategy, but when it works you'll be reaping the rewards. In the meantime, learning more about trading and experimenting with potentially good strategies should keep you occupied. There are no shortcuts in life, and trading's no exception.
I do not know about having fruitful strategy, some people can still be profitable by following someone else and other strategies. But you are right, the only way you can ever gain something useful is from trading on your own,,, testing your own strategies,,, making your own plans. Own you own successes as you own your own mistakes.