Hello! I have the same issue as you. I found a kext for AR9565 that some people say that it works for qcwb335. I was searching on google and found this:
https://osxinfo.net/konu/atheros-qcwb335-ar9565-high-sierra-10-13.2109/#
be aware! this site above has some pop-up, so be careful.
Then i remembered about a video from a brazilian guy that i had just seen the title but didn't watched, he offers a lot of kext for a lot of different kinds of wifi boards. Go check his channel:
https://www.youtube.com/channel/UCzTOTfKY9bJzi3laHEWT8aA
the specific video is this one:
now im going to try the ar9565 kext. If it works then i return here and warn about it.
P.S: I'm new to the community, so if i'm mocking any rule, I'm sorry. I read all the rules, but my english isn't very good. TY for the understanding.