Baptism isn't about having it all figured out. It's about saying yes to something Jesus already modeled for us. He didn't need to be baptized, but he chose to anyway, because obeying the Father mattered more to him than skipping a step that looked unnecessary (Matthew 3:13-15). That's worth paying attention to.
Here's what it means, in simple terms. It's you telling the people who love you, out loud, that you belong to Jesus now. It's a picture of the old version of you being laid down, the way Romans 6:3-5 describes being buried with Christ, so a new life could rise up in its place. And it's you joining a family that isn't held together by blood, but by the same Spirit every believer shares (1 Corinthians 12:13).