Well, yes. But He did not operate on earth as God, but as a man anointed with the Holy Spirit.
He did say “I can of mine own self do nothing”— John 5:30. He never exercised his Godhood in anything He did here, so as to provide for us an example of what is possible in this life.
“but as a man anointed with the Holy Spirit.”
It goes beyond that....He is part of the Trinity. He is a man AND he is God. He was part of the Trinity prior to the Incarnation, and remained a part of the Trinity during and after the Incarnation.
John 5:30 does not negate this as he is describing the relationship between the Father and the Son. A mysterious relationship but not something that negates the Son’s status as God.
I don’t know how you can claim he never exercised his Godhood in anything while on earth.
Examples are aplenty...and just because He states He is doing the will of the Father does not mean he was not acting as God Himself.
I thought the beginning of the gospel of John made that clear.