One Zigbee router (extender) won’t do. In most cases, you need several of them and a good idea for planning.
ZBBridge Pro does not act as an extender. No such mode is available. But you can use NSPanel Pro and change its mode. This way you avoid competing for bandwidth, which is not a healthy situation.
But a better solution would be to get rid of ZBBridge and use some extenders for NSPanel Pro. See this thread or read this on HA forum.