if your friend is a newbie it's normal for me. I have also experienced and done the same thing but I learned to improve money management and technical analysis after that. I think every beginner has experienced that, and the valuable thing they get is the experience and the desire not to lose again.
yup! you are right.
indeed every newbie must have passed that time. and it is a great experience as well as a great teacher that will keep us learning more.
no matter how big a mistake we made in the past, if we want to learn, i think one day we will be successful in trading. until now i also continue to study and try to collect more profit than loss. i hope i will succeed.