iPhone photos can carry a location, device details and the time a picture was taken. Those details are separate from the visible photo and can travel with the file when you share it.
Make a clean copy before sharing
Keep the original in your Photos library. Add a copy to whyaiai, read the before-and-after report, then download the clean file. When using the iPhone share sheet, also check the Location option for the destination you are sending to.
Keep the original
The clean copy is the one to send to a client, post or public folder. The original still has the camera information you may want for your own archive.