In just four short lines, the speaker admits to being "a mess" and then quickly corrects any worry that might follow. They aren't sad, and they aren't a wreck. The only problem, they say, is that they're "just confused about life."
What makes the poem work is how calm it sounds. Most of us hear "mess" and assume something is going badly, but the speaker separates feeling unsettled from feeling broken. Being confused, they suggest, is a normal state and not a crisis. The word "just" in the last line shrinks the problem, as if confusion about life is something everyone carries around and can shrug at.
The mood is light, honest, and a little reassuring. There's no drama here, only a plain statement of not having things figured out. For a reader who feels lost sometimes, the poem offers a gentle message: you can be unsure and still be fine.