Lets see astrology like a full body blood test screening.
It can tell us about our current health, risk factors and some amount of our future health and also past average blood sugar levels, past infections etc.
Knowing the detail report, we make healthy choices, take medication if needed, exercise and diet modification to prevent future risks.
So to some extent our medical status is our genetic make up( cant really change much) but our present day health is very much in our free will and we can make choices as to prevent the risk factors from expressing itself.
Whatever which is inevitable we would need to face it and get treatment or if its incurable then mortality is the only certainity.
But at every stage we have " free will" to countereact the genetic risks factors..so we can play a safe game if we know how to move about the ups and downs of our health.
So why not apply the same thinking when dealing with the science of astrology?
Though I am not into it as to have blind faith but those who believe in it should treat it like a scientific chart but its not evidence based because error is high depending on the astrologer.
So just use it with caution as a guide if one desires but free will should always prevail.