Still image from live/long exposure

[OhioHick]

Hello! First time poster and still a newbie with the iPhone. I have an iPhone 15 Pro Max. Just learned about how to use the Live photo feature with long exposure to create the flowing water effect on a waterfall. Looks great on the phone. But when I download the files to my PC, I have a movie, not a still image with the long exposure effect. How do I get the single, still-shot image of the final long exposure image? Is that file created/saved somewhere? Are there other steps that I need to take to create the final still image (from what I have read, that should not be the case)?