Black/Purple Defect Pixels On My Screen

[lytry]

I accidentally hit my monitor with my phone and now I have some defect (I guess) pixels that are either black or purple. There's no actual crack or something like that on my screen. I was wondering if it's possible to fix that problem without having to buy a new monitor. Would be great if you could help me out.
(Gently applying pressure will make the non-functional area even bigger. I also just found out that you can't see the pixels that are not working on a screenshot.)

 

[doctor8ball]

A commanded screenshot command will not produce the faulty pixels.
If you hit the monitor and it produced these faults, then time to get a new monitor or just suffer the pixel damage.
I don't think it's cost effective to repair a monitor unless you can get another spare for a lower price than repair acosts and conduct the work yourself in replacing the entire screen.
Generally speaking, all other parts of your monitor are salvageable.

If you really are desperate try this method:
https://www.wikihow.com/Fix-a-Stuck-Pixel-on-an-LCD-Monitor