How do I turn off Quick Take

I have apparently pressed the shutter button too long, and now have many 1 second videos in my Library, when what I wanted was a picture. Can I make a still photo out of a Quick Take video?

If not, I would really rather turn Quick Take off. If I want a Burst of photos, I know how to do that and can select one or all of the individual pictures taken in that burst to keep. If I want Live photos, I know how to turn that on and off, both before taking a photo, and processing the photo after it is taken. With Live, I can still end up with a single picture. But Quick Take is different from either Burst or Live. I do not end up with a photo, I end up with a video that I consider unusable and now have to delete what may be the only image I took of that person or object or landscape, etc.

If I want a video, I will take a video. When I want a photo, I should not have to worry about pressing the shutter button too long and getting a video instead. Please give me the ability to turn Quick Take off!