You can install nearly any modern USB webcam on most linux distributions to use with video conferencing software such as Zoom.
$ pactl list short sources 0 alsa_output.pci-0000_00_1b.0.analog-stereo.monitor module-alsa-card.c s16le 2ch 44100Hz RUNNING 1 alsa_input.pci-0000_00_1b.0.analog-stereo module-alsa-card.c s16le 2ch 44100Hz RUNNING 2 alsa_input.usb-USB_Camera_USB_Camera_SN0001-02.analog-mono module-alsa-card.c s16le 1ch 44100Hz RUNNING
$ pactl list short sinks 0 alsa_output.pci-0000_00_1b.0.analog-stereo module-alsa-card.c s16le 2ch 44100Hz IDLE
$ pactl set-default-source alsa_input.usb-USB_Camera_USB_Camera_SN0001-02.analog-mono
better than 'cheese'
webcam test software and video recorder with many settings:
guvcview
command:
pacmd list-sources
arecord -l