Many “Protestants” are pro-abortion.
Many “Catholics” are pro-abortion.
Your argument is, to be direct, stupid.
Follow Christ, and to hell with your pro-denominational evangelism. Preach Christ, not your denomination. Draw people to Jesus, not to Mary or your priest or to your parish.
The Catholic Church teaches the moral truth. That the church has sinners is a given. Countless protestant denominations do not teach moral truth. Now that’s a fact Jack.