Content warning for this song: it's very nihilistic and though it doesn't take itself seriously you probably shouldn't listen if you have ever considered suicide, have serious mental health struggles, or are sensitive to that kind of thing.
The song is about how people are terrible by nature and the only way to be is to be alone because they all suck and we should all just die now because nothing matters. But it's a duet. And the singers sound as though they genuinely enjoy each others's company when they sing about how there are no good people.
That fits the vibe pretty well