Light weight, free way to record a video with a blurred background using Mac webcam?

When recording a video, sometimes it's preferable to blur the background, especially when working from home or outside the typical office environment. I didn't figure out [how to blur the background of a photo booth video recording](https://apple.stackexchange.com/q/412180/290197) , so I record without blurring the background. But blurring the background usually makes videos look much more professional. Example: What is the quickest and easiest way to record a video from a mac webcam that blurs the background? (preferably using software that comes with macOS, but if not, something free and very light weight is preferred)