Hi, Just adding some info to this bug, for whoever stumbles upon it - I just got a new HP laptop (HP Pavillion X360, 14", specific model 14-cd0004la) with this same wifi chip. I was able to install and use the (very not official, run at your own risk!) drivers available at https://github.com/tomaspinho/rtl8821ce via DKMS. So far, so good (not that it's been very far yet ;-) )
Other than this driver, the laptop works very well with a stock Debian Buster 10.4. Will submit a separate installation report, of course. Thanks!