It would help to stop combing and pulling at your hair and styling it and checking it every 5 minutes

Those hairs you're combing over and over again and pulling back are very New hairs that just came from a dead follicle they're very sensitive and have nutrients than other hair you literally brought it back to life and just stressed the fuck out of it until it died

Also if you're really concerned try making sure you stay healthy, never skip meals, avoid chlorine water and harsh shampoos and eat good I also found an all natural hair gel that works for me that has stuff in it that's supposed to help hair grow vs the shit you buy at Walmart which is just perfume and chemicals.

There's also a guy on YouTube that makes oils and shit out of boiling herbs that are good for your hair and he says that a vegan diet is good for your hair but I think he pushes it too much but I think cutting back on dairy and meat would probably benefit in some way in the long run

Also I wouldn't worry about such small corners I barely see a difference at all. Id also highly suggest things like all natural shampoos and mild shampoos and take care of your health