Retrieving deleted Snapchat pictures can be a frustrating experience. However, there are a few methods that you can try to recover your lost snaps. One common method is to check your Snapchat Memories. Memories is a feature that allows you to save your snaps and stories, so if you have accidentally deleted a snap, it may still be stored in your Memories.
If you are unable to find the deleted snap in your Memories, you can try contacting Snapchat support. Snapchat support may be able to help you recover your deleted snap, but they may not be able to guarantee success.