Controller support has been fully implemented into Phasmophobia, so all you have to do is plug in an Xbox or PlayStation 4 controller, and you should be good to go.

Can you play Phasmophobia on VR with a Xbox controller?

You can play it using any these headsets. You can use motion controllers while standing to operate your character, or you can choose to use a controller to sit down, but keep your headset on to fully immerse yourself.

How do I talk to Phasmophobia controller?

By default Phasmophobia uses push to talk, so try pressing V on keyboard or Left Bumper on an Xbox controller. This is your local push-to-talk which will project your voice near where you physically are standing in the game.