@hello_green for network map in the ZHA integration see documentation → https://www.home-assistant.io/integrations/zha#zigbee-network-visualization-in-zha-ui
As this forum is meant for Home Assistant’s built-in Zigbee Home Automation (ZHA) integration and Zigbee devices used with that ZHA implementation as Zigbee gateway you should really address any Zigbee2MQTT question not directly related to Home Assistant to Zigbee2MQTT’s on community → Koenkk/zigbee2mqtt · Discussions · GitHub
Regardless of Zigbee solution used do read and try to follow this guide before you begin to troubleshoot any Zigbee issues any deeper as simpy taking actions to follow those best practice tips will usually many problems and make it easier to find root cause of real problems → Zigbee network optimization: a how-to guide for avoiding radio frequency interference + adding Zigbee Router devices (repeaters/extenders) to get a stable Zigbee network mesh with best possible range and coverage by fully utilizing Zigbee mesh networking