What I meant was, I had to be off - sorry for the typo - my mistake.
Could you post the output of
lshw -C network
and
ip link
and
modinfo mt7921e
I believe I found the Arch Linux thread you were taking about, but I’m afraid that doesn’t help ME as I’m not technical enough, at least not yet, to understand it.
P.S.: In the future, when providing terminal output, paste the output text and wrap it in 3 backticks (```). Like this:
```
pasted text
```
This will just cause it to be rendered like this:
Felis suspendisse
massa enim tortor bibendum
aliquam aliquam nec
adipiscing massa
suspendisse diam
vivamus sit.
instead of like this:
Felis suspendisse massa enim tortor bibendum aliquam aliquam nec adipiscing massa suspendisse diam vivamus sit amet tristique lorem arcu tortor mi bibendum tincidunt elementum ac.
increasing legibility and making it easier for those trying to provide assistance.
Alternatively, paste the text, select it all, and press the </> button in the toolbar of the editor.
At this moment, I honestly have no idea what else to try, I’m kind of shooting in the dark here. (There’s a reason I don’t like wireless, and this is i88t. Mostly. I think. 
Edit:
I see lots of problems with this card on the internet, so there are known problems. Hopefully we can just wait it out.
Edit 2:
Is the linux-firmware
package installed? Check by running:
pamac search linux-firmware
in the terminal. For example:
$ pamac search linux-firmware [Installed] 20211027.1d00989-1 core
Firmware files for Linux
The [Installed]
flag shows it’s…well…installed. 
If it’s not, you can install it with:
pamac install linux-firmware
Edit 3:
After some more reading, I came across this page: https://www.linux.org/threads/solved-wifi-adaptator-not-found-mediatek-wi-fi-6-mt7921-wireless-lan-card.37699/post-143291
Where the first post states:
I am not on linux but I spent hours on this problem on a brand new Asus gaming laptop and I wish I could credit the original poster but it was a video that led me to this solution:
Hold down the power button for a full 60 seconds and it resets your bluetooth and wifi then restart. Completely fixed the issue for me.
Don’tcha hate when it turns out to be so easy?
So it might be worth it to give that a try as well.