Salvation does not come thru Baptism, rather Baptism reflects the decision already made prior for Christ. It is an outward expression denoting a change in the status of a soul. It is following Christ who also was Baptized. Salvation comes thru prayer to Christ, repentance and accepting His finished work on ones behalf for the forgiveness of sin. Baptism alone cannot save...was never intended for more than an outward expression of a changed heart prior.
So sorry that you do not understand the full impact of the Catholic Sacrament of Baptism.