Okay, well, a few things:
* If you're wanting to use PulseAudio as your sound server, you'll need the `pulseaudio-daemon` package installed. This will get pulled in when installing the `pulseaudio` meta-package. `pavucontrol` doesn't have a dependency on `pulseaudio` (only on `libpulse`), so the `pulseaudio` package won't have been automatically pulled in when you installed `pavucontrol`.
* Be careful with having PipeWire stuff and PulseAudio stuff installed at the same time; in certain contexts, problems can arise due to them fighting over which one is providing a sound server, particularly if something else is automatically starting (or trying to start) them. i would suggest that, if you no longer want/need PipeWire, you should remove the `pipewire` package before installing the `pulseaudio-daemon` package.
* i no longer use Pulse as my sound server, and instead use PipeWire, but based on
the wiki page for PulseAudio, and given that you're running XFCE, you should install `xfce-extra/xfce4-pulseaudio-plugin` (if it's not already installed), in addition to `pulseaudio-daemon`, for XFCE to (hopefully) autostart Pulse