RTL8821CE Wireless : lspci on dom0 see it but never worked

does the following topic related to your issue:
https://forum.qubes-os.org/t/major-problem-with-qvm-pci-and-devices-in-general/8359/15 ?

the pci_0000 thing.
Is that your case too? If yes, does the workaround proposed works for you?