The representation of God and the veneration of Saints

Why is Jesus represented everywhere, why are there statues of Him and of the different Saints and other people of the Bible, why do people worship Saints and why are there prayers to address to different Saints in a specific situation when it is said not?

That’s a lot of questions but by them I want to know why do people represent in statutes or icon or anything the people that are in the Bible and why do they worship other people than God?

Exodus 20:3 to 20:5 20:3 You are to have no other gods but me. 20:4 You are not to make an image or picture of anything in heaven or on the earth or in the waters under the earth: 20:5 You may not go down on your faces before them or give them worship: for I, the Lord your God, am a God who will not give his honour to another; and I will send punishment on the children for the wrongdoing of their fathers, to the third and fourth generation of my haters,