Why won't my camera function correctly

I got and iPhone 6 Plus shattered the screen then got it replaced. But I didn't get the right kit so I don't think it was repaired correctly but I got it cracked again and it's been like a month since I got the screen replaced. But today my whole camera wouldn't work. The top left corner of my pictures on the front facing camera are a different color. Almost as if something's blocking the front of it so I can't take a whole picture but there's nothing covering it. I think it's just damaged from water getting into the cracks but does anyone have an idea on whats going on???