The aim is not to try a lot but to try what has potential. You have to search where the solution for the problem can be found. But the problem is that, only after you found it, you know where you have/had to look. What you did is just the opposite of what you should do: you should think out of the box. What you did is try what for decades millions have tried before without any result: Systems/indicators that you find for free all over the internet. So in the box. MACD, RSI, MA, STOCHASTICS, VOLUME, BOLLINGER... have been tested already millions of times, and every day other people do the same. Most without any good result. Instead of testing old things, one should test new things. But most people have no clue what else they still can test. I know a pharmaceutical company that has a database of any combination if chemicals that has been tested before in that company. If researchers want to do new tests they first have to check if what they want to do was not done before already.
Forget about research papers, journals, etc. Nobody in their right mind will give away their edges for free by writing a research paper (which will cease to work as more people using it). They are better off use their findings to make millions for themselves. In research papers, you can opt out findings that are not supporting your hypothesis and include in findings that are supporting your hypothesis. They are human after all, ego (to be proven right) over ethics/objectivity. From my experience, you are looking at the wrong places. There's no edge in the places that you have listed, at least for major Forex currencies.
A stoploss and or profit target is not mandatory. I use neither on a longer term discretionary system, however there is no way to backtest my system. Like a rally car racing thru forest roads, bend and bumps come along unexpectantly, but that's no reason to put on the brakes and come to a stop. Exit if you smell danger (that comes from experience) otherwise let profits run. Stoploss happens at a time later, not at the beginning of an unknown journey.
Trading = Video Games Video Games cannot be taught Therefore trading cannot be taught Or Video Games =Trading Trading cannot be taught Therefore video games cannot be taught Utter nonsense. ROFLMAO
If trading cannot be taught then why the sam hell are you on a trading forum? Trolling? Learning? Saving the gullible? Entertainment?