You have mentioned some basics rules of trading. Without proper knowledge on trading, there is a high risk of losing money. Here, you should know basics rules as well as hard technical analysis. I think we shouldn't say that trading is so easy, it's not at all easy to earn profit.
Exactly, even a professional trader will not say this, because they really know how trading is.
Even it is sometimes easy, there are also risks to be faced and there will be challenges, even higher challenges with higher risks to take.
I know that what OP said maybe to support and give motivation.
But, motivation will not work without any further knowledge, consideration, and also analysis. I know that it means that we don't need to worry about trading, but at least, we must know the risks in order to avoid and face them wisely, so that we are trading based on knowledge, not only based on willingness to trade.