Between leverage and the vig, the retail crowd loses almost all the time. Read The Education of a Speculator by Niederhoffer the chapter on Rake vs. Ruin. Even if you're not good at math you'll understand it. There are times where they win, usually during major bull markets but mostly they lose. Just pull up your last 6 months of trading and average your basic wins versus losses. Then plug it into into a basic expectation formula and it gets pretty depressing. You're destined to lose.
Retail traders don't spend any time on a method, nor do they do any research. They open an account, deposit money, and proceed to the slaughter. They're cannon fodder in an alpha male/female dominated world that is designed to eat them alive as soon as they hit "buy" on their online brokerage accounts. There are profitable daytraders out there, I personally know fewer than five. There might be one for every 10,000 people who succeed consistently. By consistent money I mean a living where you pay your mortgage, your bills, and fund your retirement. My estimates might be off by a few thousand but you'll get the idea. If you don't believe me, open an account and trade for 6 months and then let me know how wrong I was.