my main point is do catholic believe in Protestant’s ways of teaching and agree with it.
No, Catholics do not follow any Protestant doctrines, though Protestants follow many Catholic doctrines…they just won’t admit that they do.
Please consider:
Principle #1: Jesus founded one Church
Jesus founded one, and only one, Church – not a bunch of “churches”.
“And I tell you that you are Peter, and on this rock I will build my church, and the gates of Hades will not overcome it.” (Mt.16:18)
Notice that Jesus did not say, “and on this rock I will build what I must call my loosely-affiliated network of non-denominational fellowships.” He said, “I will build my church.” Each word of that little phrase is packed with implication.
Principle #2: Jesus established a Church that has authority
People need to know truth in order to be set free from sin, to be saved and to reach heaven. Therefore, Jesus established a Church that can teach authoritatively regarding these truths.
“Then you will know the truth, and the truth will set you free." (John 8:32)
We must learn the truth in order to be freed. But what truth can do this?
“Jesus answered, ‘I am the way and the truth and the life. No one comes to the Father except through me.’” (Jn 14:6)
Jesus alone is the truth that can free us from death to sin. Not just any truth will do.
Jesus answered, "You are right in saying I am a king. In fact, for this reason I was born, and for this I came into the world, to testify to the truth.” (John 18:37)
From this, we see that God the Father has sent Jesus into the world to testify to the truth. Where do Christians go to find the truth? Well, what is the pillar and foundation of the truth? Is it the Bible? No! It is the Church. Paul wrote:
Although I hope to come to you soon, I am writing you these instructions so that, f I am delayed, you will know how people ought to conduct themselves in God’s household, which is the church of the living God, the pillar and foundation of the truth. (1 Tim 3:15)
In order for the Church to fulfill its function as the pillar and foundation of the truth, the Church must have authority with which to speak to and teach those who are seeking truth. How can we be sure that the Church has this authority?
"If your brother sins against you, go and show him his fault, just between the two of you. If he listens to you, you have won your brother over. But if he will not listen, take one or two others along, so that ‘every matter may be established by the testimony of two or three witnesses.’ If he refuses to listen to them, tell it to the church; and if he refuses to listen even to the church, treat him as you would a pagan or a tax collector. I tell you the truth, whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven.” (Matthew 18:15-18)
Jesus tells you to take your unresolved disputes to the Church as the last “court of appeal” for disciplinary matters. He does not tell you or your brother to consult the Bible to determine what should be done; the Church is the final arbiter. If anyone refuses to listen to the Church, there is no further appeal; he is to be thrown out. Why does the Church have this final say? Because Jesus has told the Apostles that “whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven.”
If the Church is to speak with any effectiveness at all to the world about the truth on matters of faith and morals (not astronomy, biology or economics, etc.), then it must be able to do so with authority.