Mostly if I had to talk about the top traders, then they analyze the coins which they want to buy and want to take an entry at the point they want to buy, they see different graphs of the coins, their charts, mostly their news on google and on twitter etc, all of these things helps the investors alot, but trading is completely volatile as well. Which sometimes can go against prediction.
There are a lot of ways on how to understand the market in advance but there is no sure prediction when will the dips and its peaks occur. What we all have are just speculations that are sometimes true, and sometimes false. So even if you are newbie or legend in trading, there's no difference because at the end of the day, you both fail in making the right prediction.
However, we have technical and fundamental analysis that will really help to come up with almost right predictions. But since we have different strategies to use when we talk about understanding the market, so the outcome will only reflect on how well we know the market and its volatility.