A brother shorted after the unfavourable information from alpaca, opening a short order of six to seven hundred dollars, and without setting a stop loss, he lost over ten thousand dollars in a short time.

This guy is not willing to give up, he cut losses and increased his shorting position, and now he has already broken even.
Contracts are a double-edged sword; if used well, they can lead to great profits, but if used poorly, they can result in massive debts. However, most people do not use them well. Contracts can be traded, but they should not be traded frequently.