Fixing skin in old photos (follow up from earlier post with more details)

I made a post earlier about wanting to learn photo restoration without the aid of any AI tools. Below I have attached a portion of image of a photo of myself to show the kind of damage I am talking about. I would like to find something that would allow the skin to not look like it was erased from the photo. Any topics or videos that can be recommended are greatly appreciated!

https://preview.redd.it/y3ckxd6yoeag1.png?width=264&format=png&auto=webp&s=0b3763d01eb97200e4024b22974993070ecabed4