The RCC over-estimates man and under-estimates God. It is a foolish, anti-scriptural logic.
If God wanted all men to be saved, all men would be saved. He's God. You're not.
Yet you continue to argue that all one needs to do to be saved is to adopt tenets of Calvinism and then to declare themselves saved.
God does want us to be saved. A loving God does not damn anyone to hell, that is the consequence of rejection of Grace by the sinner. Being made in God's image, God gave us free will and the knowledge of the difference between good and evil so that we could freely choose to love him.