Here is a link to get you started:
https://technofizi.net/best-webcam-software-for-windows/
Read the information and start by selecting the web app that seems best for you.
Give it a try. If it does not work, then try another one.
Do be careful about the download sites. Many of them will attempt to trick you into downloading something else or something extra.
Also be careful about any particular install. It may or may not include add-ons and options that will change your system settings: default browser for example. Go slow, read carefully. Pay special attention to check boxes and what checking or unchecking may do.
Avoid "automatic" installs as they will use default options that you probably will not want.