iPhone Screen dim

I have an iPhone 5s and recently I've had problems with a dim screen. I have cracked the top corners and had water damage multiple times, but a couple days ago the screen got very dark. It kinda fixed on its own to the point where the lighting would be normal or not super dim. When i went to sleep, i forgot to put it on the charger and woke up with it next to me complete black. If I put slight pressure on the left corner right below the camera, it shows up dim again. Do i need to get the screen replaced to restore the image?