Contradictions do not exist, in reality. It's not hard to understand an invalid concept when encountered.
Scripture plainly says there is only one God, Jesus's God - and it says this over and over and over again.
17 “Don’t cling to me,” Jesus said, “for I haven’t yet ascended to the Father. But go find my brothers and tell them, ‘I am ascending to my Father and your Father, to my God and your God.’”
John 20:17 (NLT
The resurrected Jesus has yet to ascend to his God, in his unitarian nature. There is no 3rd person. The Apostles said this over and over and over again.
May God our Father and the Lord Jesus Christ give you grace and peace.
Philippians 1:2 (NLT)
The problem as I see it is that you think you understand, but you don't! Not a single person who has ever lived on earth can explain the relationship of the Father, Son, and Holy Spirit, other than Christ that is.
It can't be understood in detail because it's not given to us in scripture, everything you read or hear on this subject is conjecture!
But there are some things given that give us an idea of what the relationship might be.
God said in the Old testament that "there is only one God, there is no other god besides me, I know not of any." Paul tells us there is only one God. But John takes it a step further and tells us there is one God, manifest in three persons. The Father, the Son, the Holy Spirit. These three are One.
Now we know there are three distinct persons that make up the essence of God.
So when God and Paul were referring to God, they were referring to what we call the "Trinity," the three distinct persons that make the Triune God.
It's just pure ignorance for anyone to say that Jesus Christ is not God, there has to be an agenda behind that statement. No one who loves God and believes scripture can deny that Jesus is God, it's to obvious that He is.
In scripture God the Father calls the Son, Oh God! How much proof does one need?