Indeed, it is much more important to connect the Zigbee Coordinator radio adapter via long USB extension cable to a USB 2.0 port (not a USB 3.x port) to get it away from any sources of EMF/EMI/RMI interference in the same freqency range, (especially USB 3.x devices/adapters/cables and WiFi access-points/routers close to the devices are infamous for interfering with Zigbee radios), as well as very important to add more known good Zigbee Router devices in order to build out your Zigbee network mesh (e.i. add many mains-powered Zigbee devices that are always on, usually the more the better).
Recommend reading and follow this → Zigbee networks: how to guide for avoiding interference and optimize for getting better range + coverage
It as well among other things link to → https://www.home-assistant.io/integrations/zha#defining-zigbee-channel-to-use