Losing money in trading is a normal thing but how well are you managing your losses and how many wins do you have ? How many wins do you need to cover your loses? These are some important questions that traders need to ask. No trader will escape losing money neither as a newbie or a pro but these are also good points you have highlighted.
Indeed, even how good you are in analysing the movement there's still chance that you'll going to lose your position same with your statement both newcomers and those experienced traders they are not safe from losing their money, though is a good observation regarding to how both will react after losing, for experienced traders, they will continue looking for opportunity and will re-assess what made them wrong and why they lose their position.
While with newcomer, due to lack of knowledge either they quit away or will push forward and aggressively position another trade without researching and most of the time their fate will again repeatedly making mistakes and lose more.
Newbies quitting because of losing is a terrible thing because it's such a shame that they do not realize how they can get better and get a better result. This is why I think it's much better to keep on thinking you will do a lot better all the time, always keep trusting that. I am not saying all of them will, there will be people that will do very badly even if they try because trading isn't for everyone, but at the same time we need to talk about the fact that we are going to see a lot of them get better and make profit, so it is not going to be that easy.
So all in all, if we keep focusing on how to get better, it is going to be better, but if we quit just because we lost a bit, then we are never going to become good at all, it is not going to be entertaining.