>>2816870 (OP)
It's a bit of both.
Like, yeah, I do try and study the language a bit before going to most of the countries I've been. At the very least "hello, goodbye, please, thank you" and some numbers will make you seem more polite.
Realistically there's no way to learn the language to fluency without being immersed in it for years. So you kinda just have to go there, tolerate the awkwardness, and find people to practice with. You can also sign up for a language class, which also gives you a visa and some other students to hang out with, although it's kind of a waste of money.
On the other hand, most locals aren't really expecting a foreign tourist to speak their language, and it's kind of weird if you do. Especially the women who might want to marry a foreigner, they'll probably be learning English. So you might as well cut to the chase and just speak English with them. That also makes it waaaay easier to be charming, instead of struggling to remember the right verb conjugation for casual vs polite in Japanese slang or whatever.
It's not the 1800s anymore. Everyone around the world has heard English before. And most of the people you'd want to hang out with have made some attempt to learn it.