The Catholic Chruch is corrupt as hell. The protestant reformation exposed that in the 16th century and it continues to be the case to this day. However, Christ does in fact want Christians to proselytize. It's the primary responsibility of a Christian to proselytize.
Mark 16:14-16
The Great Commission
14 Afterward he appeared to the eleven themselves as they were reclining at table, and he rebuked them for their unbelief and hardness of heart, because they had not believed those who saw him after he had risen. 15 And he said to them, “Go into all the world and proclaim the gospel to the whole creation. 16 Whoever believes and is baptized will be saved, but whoever does not believe will be condemned.