The difference between the surname and the firstname wondering when people called others in surname or firstname and do the girls have to change their surname after marriage？

do Americans really speak English dramatically？？ i watched a film called ‘john wick’ once. And one of the plots leave me a deep impression that an old man( sry,I forgot his name) said wick was good at hunting. But !!! Don’t u feel using that word is strange...? Is it just in the film? Or they really speak dramatically 😅😅😂