howdy!
Please open a terminal and enter sudo pacman -S noto-fonts-emoji
Then create a local with nano:
sudo nano /etc/fonts/local.conf
And add the following :
<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>
<alias>
<family>sans-serif</family>
<prefer>
<family>Noto Sans</family>
<family>Noto Color Emoji</family>
<family>Noto Emoji</family>
<family>DejaVu Sans</family>
</prefer>
</alias>
<alias>
<family>serif</family>
<prefer>
<family>Noto Serif</family>
<family>Noto Color Emoji</family>
<family>Noto Emoji</family>
<family>DejaVu Serif</family>
</prefer>
</alias>
<alias>
<family>monospace</family>
<prefer>
<family>Noto Mono</family>
<family>Noto Color Emoji</family>
<family>Noto Emoji</family>
</prefer>
</alias>
<dir>/usr/local/share/fonts</dir>
</fontconfig>
Then hit ctrl +s to save and ctrl +x to exit.
Enter fc-cache -f -v
to regenerate the font cache.
Voilà!
Have a wonderful day!