Investing is not the most difficult job but also not the easiest, if investing was easy, not many people would lose money and you have also seen many people who do not want to invest because it is too risky than you think. The financial market is considered an extremely fierce battlefield, the winners are small and the losers are the majority, so it cannot be said that investing is easy.
Investing is good to gain passive income but it is only easy for people who have knowledge about the market and investment principles, then can apply it to manage their capital well enough, and choose good assets for their portfolios. Lastly they need to be very disciplined with their investment and capital management strategies, understand the market psychology cycles.
It's easy for people who manage to do it well but it is difficult for people who can not do above things.
When you have knowledge and experience, it only helps you increase your chances of winning, but does not guarantee that if you have those factors, you will definitely win.
There are people who win, people who lose money and in a same market, among many investors, there will be winners and losers. Not all investors will get profit because losers will do their capital management and portfolio management badly.
In general, making money is never easy whether it's investing or any job, and that's why the rich in the world only have a very difficult rate while the rest of the world still met alive in poverty.
It's not easy but as said, if people can learn and apply good strategies, control themselves well, investment will become easy and will help them to get passive income, richer and have a more prosperous financial life.