Problems with my laptop screen Huawei Matebook 14 2020

[RikyMed]

Hello everybody,
I would like to have some opinion regarding my laptop problems.
For a few days now it has started to behave as you can see in the photos, there are horizontal lines of dead pixels that make the image blurry, otherwise there are yellow halos and the halo of the previous tabs remains when I scroll or change the page, as if part of the screen did not update. I have updated video card and monitor drivers, these problems don't appear when I connect it to an external monitor so I'm pretty sure it's a hw problem.
Now what I don't understand is that when I tilt the screen back and forth these problems can disappear and I can use the pc normally until the next time the screen is turned off. If that doesn't work, I can close and reopen the pc, and then start tilting the screen back and forth. This often leads to temporary resolution of the problem.
My guess is that the monitor-to-board connector was damaged more than the panel itself.
I wanted to know your opinion about it and how long do you think it would take to fix it.