How do you change bulb on downlights?

To change a bulb in downlights, first, ensure the power is turned off at the circuit breaker to avoid any electrical hazards. Remove the trim or cover by gently pulling it down or twisting it, depending on the design. Carefully unscrew or pull out the old bulb, then replace it with a new one, ensuring it's securely fitted. Finally, reinstall the trim or cover and turn the power back on to test the new bulb.