So I have found a ZigBee dimmer that doesn’t need the N-lead, but costs ~€120.
And the Fibaro Dimmer 2 can work without an N-lead, but it’s Z-Wave, and I currently have no other Z-Wave units.
Sonoff has it’s new D1 dimmer, but I can’t find out if it can work without the N-lead.
Anyone know of any other dimmers (for LED) that can work without the N-lead present in the box, preferably wifi (flashable to tasmota/esphome/espurna) or zigbee?