change you OS tag for this
<os>
<type arch='x86_64' machine='pc-q35-3.1'>hvm</type>
<loader readonly='yes' type='pflash'>/mnt/user/domains/MacinaboxCatalina/ovmf/OVMF_CODE.fd</loader>
<nvram>/mnt/user/domains/MacinaboxCatalina/ovmf/OVMF_VARS.fd</nvram>
</os>
and add this between the 2 final bottom tag devices and domain
<qemu:commandline>
<qemu:arg value='-usb'/>
<qemu:arg value='-device'/>
<qemu:arg value='usb-kbd,bus=usb-bus.0'/>
<qemu:arg value='-device'/>
<qemu:arg value='isa-applesmc,osk=???????????????????????????????(c)AppleComputerInc'/>
<qemu:arg value='-smbios'/>
<qemu:arg value='type=2'/>
<qemu:arg value='-cpu'/>
<qemu:arg value='Penryn,kvm=on,vendor=GenuineIntel,+invtsc,vmware-cpuid-freq=on,+pcid,+ssse3,+sse4.2,+popcnt,+avx,+aes,+xsave,+xsaveopt,check'/>
</qemu:commandline>
but change the ?????????????????????????????????????????????????? part for the correct word which is forbidden in the forum
and finally change the network interface to
<interface type='bridge'>
<mac address='52:54:00:6e:06:d1'/>
<source bridge='br0'/>
<model type='e1000-82545em'/>
<address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
</interface>