24, male. Does this look like retrograde alopecia? Hair transplant question advice. Norwood scale I fall under? Prices? (Photo)

Basically around 19-20 years old I started noticing a decrease in hair on the sides of my head. I never thought too much into it until I started paying more attention to it. I’ve went to 2 dermatologists who really had nothing to say. I also am interested in a slight hair transplant on my hairline. I had a barber years ago use a straight razor on my hairline that caused permanent hairloss and an angled hairline beside it slightly maturing around 20. Also how many grafts do you think I’d need?
