You have time to mess up, recover and still build something good. Most adults you admire did exactly that.

The route to a decent life is not clean, and the people who look like they did it cleanly have mostly edited. A failed year, a job that went badly, a stretch of being completely lost: that is standard equipment in the biography of almost anybody you admire, and the recovery took longer than the story suggests. Messing up at sixteen is early data rather than a disqualification.

If something has gone wrong, give yourself a week to be annoyed and then pick one repair to start. Ask an adult you respect about a time they got it badly wrong. Those answers are usually more encouraging than advice.