I think it's fundamental and technical analysis is very useful in forex trading. in fact I think every forex trader must understand the fundamental analysis and technical analysis, in order to analyze the movement of the market well. expert advisor, I think it's better to trade manually so that we can learn and gain experience with the forex market directly. That three things are different from each other. Fundamental is another thing and the indicator is another thing and expert is another thing. The last thing you said expert which is totally different. Because expert means when a trader become good about trading. But indicator and fundamental is needed for trading.