Answer you are not looking for
I assume what I am going to write is not a kind of answer you are looking for, but I am going to write it anyway, for other people who might be looking for similar advice.
LISTEN TO YOUR OWN BODY AND RESPECT THE SIGNS IT IS GIVING TO YOU!
You wrote:
"After eating potatoes (sweet potatoes are ok), even eating pasteurized goat butter or normal butter, even raw goat milk makes me feel bad beacuse my hair (often the same place) is falling out and also splitting the ends."
A person who is listening to his own body would got the message and would stop consuming potatoes, butter and milk.
It is that simple.
Once you eliminate from your diet foods you have problems with, you will not have so many problems anymore.
One way to improve your tolerance to foods is to start flushing your liver.
Good luck!
WS