Play the video ad. You will see several files load in the network tab.
Chrome extensions are the most convenient method, often allowing one-click downloads. how to download video from facebook ads library
Build a "swipe file" of winning creative formats, such as testimonials, UGC (User Generated Content), or demos. Play the video ad
Right-click the file named "video" or "..." and select "Open in new tab" . such as testimonials
Visit the Facebook Ad Library and find the video ad.