Cropping pictures.

Thank you. I swiped left under the photo but the crop was not one of the options. I went to the very bottom under the [effects] and when I clicked on the box with two arrows turning left by the word Done I was then able to crop. I tried clicking on that box yesterday on my phone and my husband's phone but was unable to crop but today I can. Don't know why it works today but would not yesterday. Thanks again for the reply.