How can I fix the non-functioning brake lights on my Audi 80?

My Audi 80's brake lights have suddenly stopped working. I've checked the fuses and they seem fine. What could be the issue and how can I fix it?

Check the brake light switch located near the brake pedal. It could be malfunctioning and needs to be replaced.

Make sure the bulbs are not burnt out. If they are, replace them with new ones.

The wiring for the brake lights may be damaged. Check for any frayed or broken wires and repair or replace as needed.