Holding a losing position is a big taboo for all traders.

Choosing to hold a losing position for the sake of win rate results in small losses leading to big losses.

I personally believe that small losses in trading are not to be feared, but big losses are what you should be afraid of.
So every trade must set a stop loss, I only care about profit and loss. And not about win rate,

Of course. I don't open positions very often either, because the money I invest is also money.
I only have one principle, which is in the case of poor trading conditions,

Do not open positions arbitrarily. One of the roots of losses for many traders is the accumulation of multiple quick small losses, which together equal a large loss.

So I avoid frequent trading, maintain a good mindset, and wait for opportunities.