Every church I attended had Irish and Italian folks who had grown up Catholic and left the church to come to a real relationship with Jesus Christ.
They told me multiple horror stories about abuse, charlatans, drunks, etc. in the Catholic clergy. They also told me that the turning point came when they either:
1. Read the Bible and discovered God's Truth, or...
2. Were invited to an evangelical service and were amazed at the fervent worship and faith displayed including truly changed lives.
I can't cite statistics, but feel absolutely certain that far more people have left the RC church to join Protestant or Evangelical churches than the opposite.
Yes, and in percentage terms, the Mormons are the fastest growing religion on earth. But that doesn’t make them right.
Unfortunately for you, that is called anecdotal evidence and it’s absolutely meaningless in an argument. I’ll give you a C minus for effort though.