Web cams remain in short supply

The video-call boom means that, months into the pandemic, it is still hard to buy many webcam models.

Source: No end to Covid-19 webcam shortage – BBC News

I suppose you might be able to use a USB-equipped traditional video camcorder, or an older HDV video camera with firewire port and firewire adaptor on your computer. I’ve done that in the past but no idea if would be suitable now. I still have my old HDV camcorder though.