Learning from mistakes is one of the best ways to minimize losses and improve in terms of knowledge. Well you're right, it's not uncommon for someone to leave when they experience a loss for the first time, they think they can't do it and look for various reasons to justify their position. Without them realizing that this is a valuable experience for the initial success. That's why I suggest beginners should get to know the field first and the various risks they will face when everything is running. To be honest, I have been in a position like this and I choose to stay because I believe this is the beginning of my success in the future.
To be successful in trading, you must first have good intuition. The correct application of trading strategies often depends on the interpretation of situations that have developed in the course of trading. And as for losses - you can lose almost everything, but go all-in and get a big win. The main thing is faith in one's own strength (of course, it should not be blind faith).