How do we confess sins ?

Green 666 by isotope rays is NOT forgivable; it leads to permanent hell. 666 is given with World Passport with no name on it (grey plastic card). Police 666 people on highways. Food stores and prisoners/insane asylum folks (released by the antichrist) 666 people too. Reject vaccines. Don't go into UFO to be “healed” by evil demons. Hide with Orthodox Christians to escape 666; leave all electronics behind so that antichrist's minions can't track you; burn documents as documents are from Satan.

The Catholic Church has a Sacrament of Reconciliation devoted to that particular thing, which satisfies every divine requirement for the forgiveness and absolution of even the most heinous sins, while also restoring the divine grace that may have been lost when committing them. The process is accomplished in "real time", right here and right now, with complete assurance, so that no lingering doubt or other concerns need be retained by the penitent. All the power comes from God and is freely distributed by and through the Catholic Church and the Catholic Ministerial Priesthood, for the purpose of our salvation in Jesus Christ, through the mercy of God.    

Depends on the situation.  There are times when you need to confess your sin to someone else in a private conversation.  Usually because you are seeking their forgiveness or their help in overcoming the sin.

We always have to confess our sins to God in prayer.

Sometimes we have to confess our sins in public again because of the need for forgiven from others and their help in overcoming the sin.

In prayer only to God the Father through God the Son.

1 Timothy 2:5 KJV — For there is but one God, and one mediator between God and men, the man Christ Jesus.

1 John 1:9 KJV — If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.

Sins like deities are made up to control believers.

According to the Scriptures - Christians did confess their sins in public when being baptized in the church.

In the church i go to - there is confession to the priest, for those who want to take part in communion.

Also Lord Jesus called Christians to ask forgiveness from anyone you wronged (go and reconcile with your brother), before making offerings to God in the temple.