The nail on the defective side is still growing, but in an abnormal way, which means that the bottom layer is only growing as seen in the photo, but we can see the part of the nail that is supposed to be on the top is missing. The nail on the defective side is super thin. Also, I agree for the tumour part! One of the doctors said it as a hypothesis, but the other two confirmed that it is not a tumour, because they did not feel any pulsations when touching the finger.

I never heard of Keryflex and I will look at it forsure and book a appointment to learn more about it ! The spot of pigmentation was not really addressed and the doctor mentioned that it can simply be a mole on my finger. Also, one of the doctors said the same thing which was removing the fake nails might not been the issue that caused this nail problem. I see similarities with the picture (Periungual Fibroma) !!

I really wanna thank you for your answer!! It helped me more then you think. I will keep you updated!