Ok let all become Catholics but there are some problems maybe you can address.
Our Fathers and Hail Marys- vain repetitions?
Queen of Heaven--name of an goddess in Jeremiah?
Mary-a mediatior--one mediator but God and man Christ Jesus?
Mary and Pope-sinless--all have sinned, Mary said God my Savior?
1. I'm Orthodox not Catholic.
2. The Orthodox rarely if ever have penance and while we venerate Mary Hail Mary's and the rosary are not the Orthodox tradition.
3. Mary, like the saints, can pray for us, these prayers are mentioned in Revelations and important in the final judgement.
4. I don't know of any place in scripture that shows Mary being sinful, as for the pope the Orthodox church doesn't even recognize the primacy of the pope let alone the notion he's without sin.