You use a complete other driver than a 0x4339: rtw_8822bu: GitHub - lwfinger/rtw88: A backport of the Realtek Wifi 5 drivers from the wireless-next repo.
It’s not for coreelec, it’s for all platforms. It’s your fault getting the cheapest device and think others fix the issues for you.
This is from years back and not releated to Wifi at all…