The light going down right side of my iPhone won’t go off?

Hello 7KarenH!

Please see this Support Article for more info about these lights: About the orange and green indicators in your iPhone status bar - Apple Support

Have a nice day, and good luck!

you cannot switch this off, this is for security reasons, it shows you that the camera is on. There is also an orange one, showing you, that the microphone is on. Both should protect you from not knowing that someone is watching you or listening to you.

Wonderful explanation! Right on point. 👍