If you would like to remove the background of a photo, make sure to update your device to iOS 16. You can then touch and hold the subject of interest in the photo and then you will see a highlight going around the subject. Then make sure to copy or share.
One more thing, when you send a text message too fast and you want to edit it - touch and hold the message and choose to edit. It will then let you know it was edited and the receiver knows that the message was edited.
Embedded below is a 42 second YouTube tutorial.