Thank you @Ryan Daniel so much for your input and advices. It helped me a lot to get more details on how it should have been done correctly so I can find the right clinic to get it fixed.
I trusted that this doctor is skilled and I didn't know much about these techniques at the time when I went to get the transplant. I have it done on both sides, you can see on this photo the left side as well. Above I showed only right side, because the transplant there is more obvious due to another strange technique that doctor used - he didn't have any specialized measuring tool to draw the new hairline symetrically on both sides, he just drew the line intuitively and for this reason my left side was done higher than it was supposed to be, thus the hairline with transplanted hair is shorter there. But still, I need to get fixed both, I just thought it's more illustrative on the right side.
Thank you all again for your messages 😊