Young people (kids) who play go either get really good really fast or likely give up the game fairly soon. Older people who take up the game usually don't get very strong. So when we go to a go salon we usually don't see the strong young people. Young people probably don't want to play with old geezers (like me). There are quite a few strong young players in Asian countries. Universities have go clubs with professional coaches and there are tournaments just for college students. Large companies (businesses) have go clubs for their workers, sometimes with monthly visits from pro teachers provided by the company as a benefit. All this is the case in Japan but I'd expect similar situations in Korea, China, and Taiwan. Meeting the younger and middle-aged adults is the problem. If you are going to be in a country for a while you might try to find an amateur tournament you could go to or play in, where the age distribution would most likely include plenty of younger adults. If you have access to information from that country's go association you could ask about small town tournaments or district or neighborhood tournaments in larger cities.
P.S. The last time I was in Japan I visited the open playing room at the Nihon Ki-in which at that mid-afternoon time had about 20 games in progress with a broad spectrum of ages participating. I suspect that local go salons tend to have regular patrons who, indeed, may be likely to be older people. In the USA I have approached Asian students at a university and asked whether they play the game. They usually say they know the rules but don't play. Several times, when I persuaded them to actually play a game with me, they turned out to be solid dan-level players. Saying they don't play is an easy way to avoid playing
which, in the USA at least, they don't want to do because of the pressure to do well in their studies.
