Schneider Electric has launched a whole series of Zigbee devices that fit the Fuga layout for Denmark. They are not cheap, but they work, with both ZHA and Zigbee2MQTT.
For your use case, there is a Double Relay Switch and a Dimmer Switch, that can directly replace existing switches in your installation, and then control standard light bulbs or spots, but still be smart. I have tested both of these and they work with HA. There is also a Battery driven switch, which I have not tested, but that seems to have caused some issues for people who tried them.
Search the net for these and you will find a lot of info from people who are already using them.