I have seen many persons come here to lament of them losing one or two funds in trading which is very obvious and need questioning of how and where they learn there own trading skill from. I have had of a crypto traders that lost all his funds in one day because of market volatility. This happens frequently and I think there is need to recall where the cause could be from.
Yes as a trader, losing one or two trades is part of the game but sometimes losing everything that had been accumulated for weeks, months is very painful and there is need to know whether it's due to ignorance or insufficient trading skill. Acquiring sufficient trading skill is very important in trading which can also help to get good results.
I usually ask myself questions whenever I have consecutive loses in trading, trying to know where I'm getting it wrong. This had helped me many times to get more trading knowledge that had improved my entire trading.
I agree with you, infact I think even winning should be questioned, every trade that you make should definitely be questioned, this is why good traders always recommend trade journals, these journals help you keep record of all types of trades, whether good or bad and most importantly help you record the reasons for the same so that whenever you encounter the same situation once again, you know what to do and what not to do.