Most people just learn the basic of trading which is just executing trade, but this isn't enough to be a successful margin trader if not you keep loosing funds, you have to learn about chart patterns, know how to analyze trade, know how to read candles. With this knowledge of technical analysis you could actually know when to enter and leave the market, like it's said no one can actually know the direction of the market! I might be new but with my studies I can say technically analysis could help to predict the market to an extent. Trading futures without knowledge of technical analysis is just like gambling because you don't know the next movement your just trading based on luck
In the first place, I agreed in the statement you said in which " We must learn the basic trading " this was actually right. But, using technical analysis especially for the newbies who come here in crypto space, it would be difficult for them to adopt it for sure. Perhaps, fundamental analysis is enough for us to earn, and knowing how to read candlestick, or patterns would also help as well too. Without this basic idea in trading I am pretty sure everything we do will be turn into nothing but to loss your assets just as simple as that.