According to https://fujifilm-x.com/en-us/webcam-support/ the only software that is officially supported is: Zoom, Google Meet, Skype, Microsoft Teams. I wouldn't expect Facetime to work unless there is a browser based version.
In general I think browser based video chat software in a Chromium based browser will work. Slack for example, doesn't work as a desktop application, but will work if you used the browser based version in Chrome.