Try installing
yay -S --needed pipewire pipewire-alsa pipewire-pulse pipewire-jack pulseeffects pipewire-docs xdg-desktop-portal xdg-desktop-portal-kde helvum
and reboot(save all your work before rebooting) to see if your device shows up. The detailed troubleshooting information is found at PipeWire - ArchWiki after that, but one of us can help you here with it 