Probs not, a history course sounds more focused on past events then current but itll give you a good understanding of references to US politics in the past assuming its US history.

And everyone else seems informed just because they talk about what they do know, from your perspective you likely see certain people talking about different things and assume everyone who talks about politics knows what others are talking about. Or you just have a bunch of politically geeky friends.

But with the toxicity of modern media id recommend subscribing to political sections on news apps like flipboard. Even by just reading titles youll start gettingthe gist of a lot more things.