So then, I assume this information is about your older internal Intel wifi adapter. Can you disable this internal adapter in your bios? If so, I would download and install the proper driver and an older LTS kernel and then disable the internal adapter via the bios (if possible).
Download and install an older LTS kernel:
sudo pacman -Syu linux-lts linux-lts-headers
After the updates and the LTS kernel is installed reboot.
At the advanced grub boot screen switch to the LTS kernel.
Once booted into the LTS kernel install this driver from the AUR:
https://aur.archlinux.org/packages/rtl88x2bu-dkms-git
Be sure to read all recent comments on the driver’s AUR webpage.
You can either use an AUR helper or pamac to install the driver.
If you use pamac you may need to enable the AUR from pamac’s preferences/options.
Install the driver, then reboot. If the adapter is still not working post:
inxi -Fxxxza
lsusb | grep -Ei "(rtl|wl|adapter)"
lsmod | sort
rfkill list
sudo dmesg | grep -Ei "(error|fail|firm|regdom|cfg80211|alpha2|wmi|wl|80211|deauth|rtl88*)" | grep -viE "(acpi|ras|nvidia|*faillock|eth)"
grep -r "blacklist\|install\|options" /etc/modprobe.d/ /etc/modules-load.d/ /usr/lib/modprobe.d/