untroubled

adjective
  1. Free from disturbance or distress; not worried or agitated. adjective
    She remained untroubled by the chaos around her.
    His untroubled demeanor suggested he was confident about the outcome.
  2. Not affected by problems or difficulties; calm and serene. adjective
    The lake was untroubled, reflecting the clear blue sky.
    He lived an untroubled life in the countryside, far from the city's hustle.