It's really easy to stop Instagram posts from saving to your camera roll-and there are two ways to do it. The first way is to simply go into your settings and turn off the save original photos setting. This will prevent any future images that you share on Instagram from automatically saving to your camera roll. The second way is to delete the app from your device entirely. If you ever decide that you want to start using Instagram again, you can just re-download the app and log back in with your username and password.