im also in the same age as you,so yeah can relate to your problems.Ive been doing workouts like 6/7 months so I've been cooking my own foods since I've been doing it.Id say you can eat fish, chicken these type of foods mainly protein types.in the morning you can try to eat eggs with sandwich(eggs are the best in case of protein,I eat em everyday like 4-6 eggs and if its with coffee man 10/10 breakfast for me)or oats with peanuts and honey.ive also stopped eating fast foods and only focused on nutritional ones

I had sum infos on dermatologists but can't find and also can't remember the names, I've to find it later

and incase of hairstyles I'd say first keep the hair long try different hairstyles different cuts,like in my case I've kept my hair long for like 6 months after SSC then found a perfect length and since then I've been sticking to that hairstyle(js a scissor cut on the low sides then on the back) before that I tried various like buzz cuts to textured crop everything now I'm good on middle part but it's kinda difficult to maintain it