How did you configure this Bridge? What is this a copy/paste from?
This has created a second Bridge to your broker. Not a problem, but just so you’re aware!
When you look in your OH3 UI, in the Things section, do you see either of these with a green ONLINE badge?
Is there a reason for not using the UI? Here’s a guide for setting up MQTT in openHAB 3, and here’s a guide for a simple bulb via zigbee2mqtt..
I can’t see anything immediately wrong with your configurations, but I’m on mobile so it’s not easy to see. Hopefully the links above might help…