Can you really make money playing contracts?

I have summarized the reasons for losing money in a few points

1. Lack of cognition (lack of judgment on the project)

2. Bad mentality (lack of concentration and patience leads to failure to hold orders, or frequent selling, or fluke mentality leads to liquidation)

3. Poor technology (always pointing the opposite direction to the trend, resulting in smaller and smaller positions, and falling into a vicious cycle of losses!

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