I am not sure it follows that if we are created we have to have been created for a purpose. God could have created us on a whim with no purpose in mind, except perhaps to pass the time.
I believe we were created for a purpose (and I acknowledge that is a matter of faith). The purpose was to love and worship God, of our own free will.
If God created us for no purpose, that would have been the purpose. We are also enslaved to the physical world we live in. If you choose to not put gas in your car you run out gas. If you choose to not look both ways before crossing the street you may get squished.
So some are created for the purpose of being squished, or, we live in created system of laws, physical laws and otherwise with a higher purpose of some kind. I don’t have the answer to this one if you think it through. Lot’s of good people get squished, electrocuted or whatever for no apparent purpose.
It is instructive to notice a ratio to traffic deaths and seat belt laws. If you can increase seat belt usage, deaths go down. What does this say about individuals mystical purpose? I don’t know.