I can write a very long response to this, but the bold part is beyond wrong, and an inaccurate view on the Catholic view of the Eucharist and the real presence. The sacrifice of Christ on the cross happened ONCE and ONCE only. The Mass is an reenactment of the Last Supper and Good Friday.
Also in Acts 16:15, whole households were baptized. Which most certainly included children and infants.
Regarding Mariology, "Behold your Mother" by Tim Staples is a wonderful book that uses scripture to defend the Marian doctrines.
Prayers for the dead are an ancient Christian and Jewish practice. They weren't even questioned until the Protestant Reformation. Ideas such as soul sleep aren't biblical and weren't even thought of in Christianity until relatively recently. I think the 1800s.
Regarding confession, it's 100% biblical. John 20:19-23, Matthew 18:18, James 5:13-16, Matthew 16:19, among others.