The three points you convey are not enough for a crypto trader.
There are other points that you must master and understand before you dive into the world of trading or the crypto market.
The main thing is that in order for you to become a professional or quality trader, you need to understand what crypto is, because each type of crypto has its own uses and characteristics, choosing the wrong type of crypto in trading could result in losses for you.
The other thing is that you also need to learn regularly about technical or fundamental analysis. Both of these things are important for a trader. If you have this knowledge, you can master charts or indicators price movements, as well as the fundamental concept of focusing on events or news about crypto developments are important in trading in order to become a quality person.
And others, it is important to monitor market conditions on a scale and also adapt. I think some of the things I mentioned above are very important for those who want to trade crypto and there are many others that you need to underline.