Without a doubt, a professional trader needs fundamental analysis and technical analysis together, because they are interconnected.
Technical analysis cannot be done accurately without knowing the fundamental analysis and following the news of the coin and the changes that may occur to the coin such as launching a development, changing the network, burning, etc., because all of this information may lead to a significant change in the price and therefore the analyst must follow it.
In fact, there are many inexperienced traders who get good opportunities just by following the news.