The problem I have with the Trinitarian believers is that they don't even understand the Trinity they believe in. We wouldn't be having all these problems about the Godhead if the Trinity doctrine could be explained. Jesus said, ' I and my father are one.' And several scriptures in the Bible both in the old and New Testament testified to it that our God is one God.
Genesis 2:7; told us God [the father] breathed into Adams's nostrils the breath of life. John 1:4; Made us understand that the breath of life which God [the father] breathed into Adam's nostril was in Jesus Christ. 'in Him [Jesus Christ] was life.' Use this passage to make a difference between God the father and Jesus Christ.
The Bible can never contradict itself. Man is made in God's own image and likeness, what that means if you don't understand is that we are God's duplicate. Adam is made in three forms, Spirit, soul, and body. God's Soul is the Holy Spirit and His Body is Christ. If you believe Adam is not triune, then God is one and not triune.