Of course, you even have to. But there seems to be a misunderstanding. The coordinator is your hardware. z2m connects your coordinator to the mqtt broker which connects to openhab.
You said you can see the sensor states. Where? In openhab? Which OS are you on? Are you using openhabian? Docker? …
You cannot run the zigbee binding and z2m in parallel on the same stick.
But without knowing the setup it’s hard to understand.
Lots of examples for z2m can be found here:
https://community.openhab.org/t/zigbee2mqtt-revisited-no-more-ugly-transformations/86362
edit: Another way is of course to use the autodetect option in mqtt. But I tried it long time ago without success. So I have no experience how it’s working now.