Jesus never said he was God. If he was God then it would be going against God to not require people worship and pray to Jesus. Jesus refused to allow anyone to pray to him because he is not and never was God. Because of the power Jesus displayed with miracles, some people did worship him because all people have freedom of will but Jesus did not want any worship. Jesus leads people to God so they worship the correct God. Jesus is not a mediator to change the decisions of God because God's decisions are righteous and Jesus would never disagree with them. Jesus does not have more mercy than God does. Everyone is responsible for their own moral sins and secular crimes and must pray to God for forgiveness of them and become water baptized to open the door to forgiveness.
Jesus is "ONE" with God in the same way Jesus said when a man and woman get married they become ONE. They are one in love, loyalty and purpose to establish a good life together.
And they twain shall be one flesh: so then they are no more twain, but one flesh.
That they all may be one; as thou, Father, art in me, and I in thee, that they also may be one in us: that the world may believe that thou hast sent me.
Yes, there is only One God and no other being is compared to Him.
The prophets of Allah peace and blessings be upon them all, were knowing this and communicated the message from their creator. They are in no way part of their Creator
Well, you are closer to Islamic belief except the "baptism" way. There is no need for all that because Allah is the only one that forgives and you can pray DIRECTLY to him to forgive you. No need for any intermediaries. Allah is the Gracious, the Merciful.