Most of the days in which the calculator is completely wrong are when it predicts down days. Although I lost some money, I didn’t lose a lot because the pressure was down and kept heading toward zero. Also, when there is a weekend, a holiday or a down prediction, I place 50% of my normal position size.
It was an up and down day and my positions did end up in the right place, but not before I stopped out.
Unless you have a specific day trading strategy, never try to make it up on emotion, just move on to the next planned trade at the end of the day.