Hairfall and how to regrowth.

(Last year I use whey protein after doing exercise.) My hair starts falling so I use coconut oil along with vit E but it doesn't prevent my hairfall.so I shave my hair in last December(there are dandruff on my scalp) after that my hair starts growing and I doesn't seen any major hair fall till now. From last 15days I use hairbless tablet and minoxidil 5% foam. I want to know about how can I improve my hair (I feel my hair is thinning)? What medicine I use to improve and hair regrowth? Can I use darmaroller & minoxidil combination with finastidine? After doing some research online and watching videos of other dermatologist I think my problem arrise due to DHT. Please suggest me what to do. I attached picture of my scalp.