How can I get Live Photo at my iPhone 6

As mentioned you can't take a Live Photo on your 6 but I do have a 'Live Photos' folder on my iPhone 6. That's because someone has sent me live photos by either email or txt.

The iPhone 6 is not capable of taking a live photo but IS capable of showing a live photo (by touching and holding) if it was taken and sent to you from a Live Photo capable phone.

If no one has sent you a live photo then you won't have a Live Photo folder.

The live photo option requires an iPhone 6S or newer.

Please confirm the model number of the "5S" at Settings - General - About - Model = ???

Hi, I think you will find you were taking live photos on your iPhone SE. (It looks identical to the 5S).

Live photos are currently not able to be taken on the iPhone 6, only the 6S (and higher).

Hopefully, this will help.