I dont have it, so I can only cite an older thread.
The real experts say, to use the RPi 3 OpenWRT firmware image, as the Zero 2 has the same CPU: Software for Pi Zero 2 W - #22 by daemonix
On top of that, the Wifi driver needs to be added manually (if you dare to use the internal Wifi), as the Pi foundation continues to refuse to officially opensource the Wifi blob for the Zero 2w for I think more than 2 years now, which still prevents OpenWRT from providing an official image.
But I do not know the definitive recipie for the Wifi driver, I roughly remember there might be 2 slightly different Wifi chips (2 different chip foundries? Infineon? Cypress?) in use, where each might need a different Wifi blob, so you may need to try up to 2 blob packages + the driver package (and I can‘t name either, as I don‘t know the correct package names).