I’m in my 40s and live in Europe (NL), and in my country, if you don’t take your driving exam in a manual transmission car, you receive a restriction on your license that prevents you from driving manual transmission vehicles. As a result, both I and nearly everyone I know can drive a manual. Automatics are also a fair bit more expensive, so most people don’t opt for them. Tho I expect this will change with the rising popularity of electric and hybrid vehicles.