A sympathetic gambler is deeply disturbed and needs mental help. Because they are close to becoming addicts and with no proper repercussions the person will continue to lose more in gambling.
They are already addicted and that is the reason why they are sympathetic, they wouldn't be that way if they weren't addicted to gambling or had already spent and lost everything they had. A sympathetic gambler is someone who has gambled and lost everything and is now gaining sympathy either through his condition or facial expressions as said by OP.
Do you know that, most gamblers don't read or research about the effect of gambling and why it was made? Only a few understand that it's for fun, millions of gamblers go there for the money. And end up disappointed.
Yes, I know, and I also know that those who do research and understand the consequences of excessive gambling also become excessive gamblers sometimes, it's not what they want but it's what happens because they lack the required level of patience and self-control to stay out of that red zone.
Assuming addicts researched before gambling and followed the strategies that help in avoiding addictions, they wouldn't have turned addicts.
As I said above, it's not just about knowledge or understanding, sometimes people become addicted even after knowing that they will get addicted if they do certain things and that is because they don't have a patient and disciplined nature.
After a few discoveries I found that you're right. Anybody can be addicted to gambling depending on different factors. Not just self-control, therapists say that we can get addicted without being aware. Maybe after some moments, the brain begins to act in unusual ways. The gambler now discovers he's addicted to gambling. But, won't have the courage to inform anybody or open up to family or others on the outside. In this stage of addiction, the gambler gets exposed to more problem gambling. Spending money without calculating and ends up becoming a sympathetic gambler. Then it could be a serious stage of addiction according to your context. It doesn't seem like the first stage of gambling addiction, where the player still enjoys gambling thrills and invests more time into gambling, and avoiding other social activities. Why I said something about sympathetic gambling as a way towards gambling addiction, before you changed my perspective, is that even newbie gamblers experience the same thing. Most people who we see wearing angry faces are new gamblers. Who have been disappointed, or carried away by thinking that they've not lost enough money like the other guy who just left. Hence, they'll trust trying more luck could bring a change to their current losing spree.
Then in the next process, the player will get desperate, seeking more wins, and hopelessness erupts in the life of the gambler. He won't see things the good way anymore. Gambling will be the priority on their daily list. So, not being aware of these things or the disadvantages of gambling doesn't make any difference for those who do? Don't you think a percentage of gamblers who do their research, escape addiction? regardless of the whole odds being against the player. I mean not everyone gets addicted, after discovering the importance of money management and practicing it. That is creating a strategy for limiting how money is spent. May be having a daily transaction limit on the bank account. At least the gambler is one step ahead of getting addiction, because his money gets cut, whenever he tries to gamble more than his daily limit. In my first response, reading and practicing what we've read is still effective. You're right, for those who don't practice what they've read about escaping addiction.