Many people like to treat trading as a daily settlement, for example setting a goal for themselves, like earning 30 USD in a day or making 1% of the total position size daily, which is very foolish.

First of all, setting this goal is already wrong.
Once you set such a foolish goal, you will force yourself to trade every day, and impulsive actions like quick entries and exits will follow one after another, eventually leading to emotional losses and burning through your capital in one go.
Truly good trading always involves spending a lot of time waiting—waiting for major trend changes, waiting for reasonable right-side structure shifts, waiting for market sentiment to turn, waiting for macro information to be confirmed.
And before each trade, you must have expectations in your mind: if I lose this trade, how much of my total capital will I lose? How much leverage should I use? Where should I set my take profit and stop loss?
Instead of jumping in impulsively without any logic or plan, just wanting to make a quick profit and then walk away.
As long as you're human, without trading discipline, you'll hold onto losing positions, and the final result speaks for itself—only liquidation, losing everything in one go.