iPhone 7 frontal camera stopped working after accidentally stomp

Hi! Earlier today when I was on my phone it was all working fine and I left it on the floor. I only came back into the room later after something enraged me and I sort of accidentally stomped my heel directly on the upper screen of my phone. Now when the screen is on there are 2 little green ovals in the bottom right of the screen and 1-2 red ones seperate from each other more on the top part of the screen, also including the main problem which is the front facing camera, as in the one that faces you when you use your phone. I have tried other apps with seperate camera options, specifically Snapchat then the actual camera app. It lets me take a picture or record on Snapchat but right after it goes back to the screen before it. For the camera app, the screen is also entirely black with the little specs on it and the button reacts to my touch but no noise or picture is sent into my cameraroll, on the other hand, the other camera works completely fine. I assume this is internal damage but I feel like both cameras would be broken if it was, I have the assumption that it might be something software or like a sort of screen type thing. But either way is there a way to fix it? If so, how? And how much would it cost if I couldn’t do it myself? Thanks!