Light Switch 2 Black Wires 1 Red Wire. The top countries of suppliers are China, Hong Kong. But first, let's get my disclaimer out of the way: Never work on a light switch with the power on.
There are two neutral wires, three permanent live wires and a switched live wire (a red sleeved neutral wire which returns from the wall switch). It won't destroy the switch if wired Fold and stuff the wires back into the box and push the switch into place. Those two wires go to the switch and the blue-red wire goes to your lamp.
The diagrams below show the various options.
I removed a ceiling fan that also had a light (light and fan control by separate switches).
Your existing wiring only has two wires; one must be phase and the other neutral. There are two neutral wires, three permanent live wires and a switched live wire (a red sleeved neutral wire which returns from the wall switch). I am a little confused by the original setup.