Even if you have all the necessary elements to be called a professional trader, there is no guarantee that you will make a profit from trading or that making a profit from trading is easy . Because even if you use all the knowledge and skills you have, you will never be able to predict unexpected factors, or manipulate...Therefore, there will always be certain risks in trading and making profits from it is not easy .
Bitcoin is unpredictable because there are always unexpected impacts, events, or shark manipulation in the short term. Therefore, to minimize the risks from those things for ourselves, long-term holding will be a much better choice.
On this I will say there is no guarantee too that you will be able to make profits from holding too, because it’s basically a form of trading or rather prediction too but only has less risk compare to the future trading. The unexpected factors or manipulation (although this is for Altcoins) that you mention are also in the case of holding of coin but the risk is minimal due to its longevity
There is no guarantee of success in both but only past experiences is what derives the believe of investors that they will be able to Make profits investing, same as trading. The Reason for all the technical analysis is just to catch the trend and also check where bitcoin reacted to in the past, with proper risk management as stated you reducing your risk to reward which will make you profits. So with this knowledge you can definitely make Zoe
Profits from trading.