Unfortunately, the new bluetoothd in Monterey does not support Bluetooth 5.2. Unlike other cards, there is no way to downgrade AX210's Bluetooth to 5.1.
However, the old IOBluetooth drivers from Big Sur and older is compatible with Bluetooth 5.2.
Right now there are only two options available:
Purchase a USB Bluetooth dongle and use MontereyDowngrade the system to Big Sur or older