My devices in Zigbee2QTT are unavailable in Home Assistant

I am new to Ha. I completed the installation and added a sonoff lite ziggbee dongle. I I added mosquitto broker and zigbee2mqtt. I can load apps in ziggbee2mqtt but can’t see them in Ha

Welcome to the forums. To be able to help you need to supply more information. Have you followed these steps? Configuration | Zigbee2MQTT

Did you maybe forget to enable HA integration in Z2M settings?

I have followed these steps, but the problem continues.

I enabled Home Assistant

Follow the suggestions in this thread. It contains all possible troubleshooting path for your same issue