Do I need a console for VR?

Hello, I'm curious about virtual reality technology and have been considering investing in a VR headset. However, I'm wondering if a console is necessary for me to fully enjoy the VR experience. Could you please explain the role of a console in VR and whether it's absolutely essential for me to have one in order to use a VR headset? I'm also interested in knowing if there are any alternatives to a console that I could use to access VR content. Thank you for your help!