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Add BrcmPatchRAM2 & BrcmFirmwareRepo to /Library/Extensions, repair permission and rebuild cache

Did you check or consult our posted (non-exhaustive) inventory? https://osxlatitude.com/index.php?/topic/2120-inventory-of-supported-and-unsupported-wireless-cards/ If you have a WWAN slot and want a perfect card that'll work OOB and as on a real Mac, I highly recommend Apple's own Broadcom BCM94360CD. It needs an adapter (but they exist in mini-PCIe and M.2 form) and it's more expensive than other cards but works fantastic and at great speed. https://osxlatitude.com/index.php?/topic/7554-apple-broadcom-bcm4360cd-80211-ac-wifi-and-bluetooth-combo-card/

QCA9377 is not supported. Try DW1560 or DW1830, both are M.2 wifi/bluetooth combo card.