Help with hair loss routine please

I currently use 12.5% minox with fin and have been using fin only now for 1 month and have been using minox for a year.

I have consistently used the minox over the year but have now started to use
Derma rolling twice a week and on one of those nights just use castor oil with aloevera. Also I wash my hair daily but mix up the shampoo, I use completely natural one day and nizoral about 3-4 times a week.

Questions-
-I would like to know if I should use a derma pen? Rather then derma roller?
-should I use a cheaper company then Belgravia for minox?
-any advice on how to improve my routine in general?
- also I’m not sure if me washing my hair daily is bad but if I don’t it does look greasy.

Thanks In advance