The true reasons investors lose money
Over the years, I have come across many wary i nvestors who have lost money in the markets. On further investigation, it usually turned out that they lost money due to other reasons. They lost patience and sold out in a crash. They owned one or a few shares. They followed a tip. They only had risky assets.
Market risk pays off in the end because i t combats inflation risk, which is your biggest threat.