Chosen Solution

There’s no colorful lines or extra lines, it’s just this black stripe — the backlight seems to work, whenever I press a little around the rim, there’s discoloration. Is the LCD broken?

Sadly you do need a new display assembly ;-{ In your case the ribbon cable which drives the column of lines that are black have gotten damaged. Here’s a look of the T-CON board which is located within the body of the system. The two large ribbon cables carry the video singles to the LCD panel in the lid. One of these cables got damaged.

Here’s the needed part: MacBook Pro 13" Display - Space Grey, P/N 661-07970MacBook Pro 13" Display - Silver, P/N 661-07971 And here’s the guide MacBook Pro 13" Function Keys 2017 Display Assembly Replacement