The markets like btc gold and sp500 is like hope for many people but they will cry they will lose all.
No one can be exempted from losses when they enter a financial market, but you are wrong if you say they all will lose because no matter what the conditions are, there will always be winners and losers in a financial market.
A LOT markets will be out of order and errors so you can't even sell or buy.
Are you seriously saying that the markets will be out of order, and people can't buy or sell? What are you smoking? Markets can have different conditions, but they can't be out of order or have errors, so traders can't buy or sell. You are not saying logical things here.
People have hope that times are hard they can make at least money with investing trading but little to do they know the markets will crash and a lot long positions will be wiped out also a lot oil gold long leverage positions Will be wiped off.
People with market sense and enough knowledge won't face extreme consequences. Those who know nothing but try to be smart, like yourself, will indeed have to suffer.
A LOT people Will lose and get lesson from the markets
Losses are lessons for traders, indeed. However, you are not referring to it in that sense. Those who trade should be ready for the worst and try to do their best to stay as far away from it as possible, and that is only possible if you understand the market you are trading in. Learn it to the core, and you won't find yourself in the worst situations.