People losing money from equities and/or MFs is a well worn story. It has elements of both truth and false within.
False because many people say they "invest" but they actually just "speculate", especially on prices. They simply go by news and "hot potato" theory. They hear story of a stock, or bitcoin or whatever instrument and buy it because "it is going high". And if there is slight increase they think they pat their back and find another hot stock. And then greater fool theory kicks-in. If there is no greater fool than them then they are left with a real hot potato stock.
The only way out for people is to educate themselves with how finances are managed - individually or company wise and then go from there. As for the easy way? While just selecting Morningstar's 5 Star rated funds should suffice there is another story behind it. And this bring us to the true part of the story....
Fund returns are always absolute and hypothetical. What this means is that while a fund might show 20% growth over 15 yrs, the returns are never real. Because there is a well known phenomena in funds business - People add money when times are booming and take out when there is a slump. So, there is literally no one who actually gets the same rate of return as the fund. And the reason is same, there is no conviction and most people select funds because someone told them it was good.
I guess what I am driving at is this - One, Learning about finance is a life skill, everyone should make an effort. Second, if people cannot put in time, then they should not chase hot tips and stick to FD/bonds/PPF - These instruments will preserve capital and they will have their money even in times of need. But, they also need to look around and see - No one got rich from putting money in bonds.