Using the basics of technical analysis will allow the trader to avoid many mistakes. In a falling market, I would not advise beginners to trade. You could lose capital.
You're right about crypto currency beginner trader not in a down trend market like now but I want you to know that analysis either the technical or the fundamental does not guarantee any crypto trader will avoid mistakes because all the analysis are just a game of guessing and even the experience analyzer make debt sometime.
Yes, that market trading is very unpredictable, everyone may have their own opinions regarding crypto price movements. However, sometimes crypto changes rapidly. One of the most important points is how we can be as smart as possible in making decisions, experience becomes a thing that will be very influential in determining the results we will get.