And at one point technical analysis can even not work due to fundamental news which sometimes contradicts technical analysis. So fundamental analysis is often considered more important by some traders and they then carry out technical analysis after fundamentals. And it will indeed be very effective if the two are combined.
It depends on the trader that you are. If you do not just trade often but wait until you heard or read some news which can give you where the market is going, then enter position, such traders may not really know much about technical analysis. But if you are a scalper, you may not just prefer fundamental analysis but prefer technical analysis. But the best is to go for both and be an expert in both.
Negative events can cause a massive sell of a coin by holders and the knowledge of these events can help you understand the position or the direction that the market is going likewise a positive event. As a trader fundamental analysis is quite necessary to be carried out first because on days where there are high impact events, some crypto pairs can completely be avoided, or because of the awareness of the forthcoming news or events that will have an effect on the market, a smart trader who does not trade often can take advantage of it by trying to make a research on the event to know if it's a positive event that can cause a massive buy, or a negative event that can result in massive sell.
Technical analysis will show you the direction of the market based on what you are seeing and you will be sure of it, while fundamental analysis will give a hint on the direction of the market based on a forthcoming news or event. Like I said before, knowledge of both greatly increases your chances of hitting your TP.