You just don't get it.
1. Did Peter preach the Gospel? Absolutely
2. Did Peter preach repentance and faith towards Christ? Absolutely
3. Do sinners receive the Holy Spirit when they obey the Gospel? Absolutely
4. Are believers to be baptized immediately upon conversion? Absolutely
5. Are believers added to the Church when they receive Christ? Absolutely
6. Does all of the above apply equally to Jews and Gentiles? Absolutely
IT IS FALSE DOCTRINE TO CLAIM THAT THE GOSPELS WERE FOR THE JEWS ONLY.
Not just that. It is total nonsense.
1. Did Peter preach the Gospel? Absolutely
2. Did Peter preach repentance and faith towards Christ? Absolutely
3. Do sinners receive the Holy Spirit when they obey the Gospel? Absolutely
4. Are believers to be baptized immediately upon conversion? Absolutely
5. Are believers added to the Church when they receive Christ? Absolutely
6. Does all of the above apply equally to Jews and Gentiles? Absolutely
IT IS FALSE DOCTRINE TO CLAIM THAT THE GOSPELS WERE FOR THE JEWS ONLY.
Not just that. It is total nonsense.
Your point 2 is also incorrect. Peter was not preaching to the Jews to put their faith in the death burial and resurrection of Christ to be declared righteous. Read the entire Acts 2 carefully.