I wonder is there anyone who succeed on trading with indicator/combination of indicator/special strategy.
I'm open to discuss all ideas.
So to answer your question, yes I believe there's many successful traders out there who are using indicators, but I don't think that they're only using indicators because the fundamentals can also be a factor when it comes to price movement.
To answer your question regarding indicators being useless, if it's useless then no one would've used it when they're trading. In short, it's still useful. There are some traders out there who are solely using technical indicators whenever they're trading, and there are some who are also using the fundamentals then they're deciding base on it. However, the problem with some traders is that, they think Technical Indicators as like the answer to their problem. Like if they use these indicators, they will have a 100% chance that they will always get profit whenever they're trading. Technical Indicators increases your chances of getting profits in trading however, it isn't guarantee that you will win even you use it.