Screen backlight only half working

Over time my MacBook has been developing an issue, at first when I pressed the bottom area of the screen bezel it starts doing something I don’t really know how to describe, so I attached a photo, and the screen is noticeably dimmer. Currently I don’t have to do anything for it to happen, and even worse, sometimes it flickers, however the backlight never fully turns off. I tried running the laptop with the bottom off and pushing the display cable, but it didn’t do anything, so I’m assuming it’s something inside the display.