Hi,
Thats usually not how we manager software.
It would probably be best to show the actual model:
[HowTo] Provide System Information
EDIT.
Oops. Nevermind I see it in the output.
Which means theres a bunch of AUR packages:
7 aur/rtl8821cu-raspberrypi-git 5.2.5.3_24795.20171031.r18.g0278eaa-1 (+0 0.00)
rtl8821cu chipset driver
6 aur/rtl8812au422-dkms-git 4.2.2.r7502.gc20130507aur2-1 (+1 0.00)
rtl8821AU/rtl8812AU/rtl8811AU driver with firmware version 4.2.2 (7502.20130507) (Tested and working as of Linux kernel 5.3.8-arch1-1)
5 aur/rtl8821ce-dkms-lts 1.0.5.r110.gd95376d-1 (+1 0.75)
rtl8821CE driver for lts kernel with firmware
4 aur/rtl8821ce-dkms 1.0.5.r110.gd95376d-1 (+2 0.37)
rtl8821CE driver with firmware
3 aur/rtl8821cu-dkms-git 5.4.170ca0bcba-1 (+13 0.89)
rtl8821cu chipset driver
2 aur/rtl8821ce-dkms-git 1.0.5.r36.gca4abd8-1 (+25 0.99)
rtl8821CE driver with firmware
1 aur/rtl8821au-dkms-git 5.1.5.r59.gaf07b27-1 (+45 0.00)
rtl8821AU, rtl8812AU and rtl8811AU chipset driver with firmware v5.1.5
See here:
https://aur.archlinux.org/packages/?K=rtl8821
But please see this for using the AUR: