Jesus being true God and true man, had free will.
His predestination was not the Calvinist "predestination".
It was the predestination of foreknowledge.
So you are saying that Jesus was not predestined to be born?
Christ was predestined
1Pe 1:18 Forasmuch as ye know that ye were not redeemed with corruptible things, [as] silver and gold, from your vain conversation [received] by tradition from your fathers;
1Pe 1:19 But with the precious blood of Christ, as of a lamb without blemish and without spot:
1Pe 1:20 Who verily was foreordained before the foundation of the world, but was manifest in these last times for you,
As was His betrayal and execution
Act 2:21 And it shall come to pass, [that] whosoever shall call on the name of the Lord shall be saved.
Act 2:22 ¶ Ye men of Israel, hear these words; Jesus of Nazareth, a man approved of God among you by miracles and wonders and signs, which God did by him in the midst of you, as ye yourselves also know:
Act 2:23 Him, being delivered by the determinate counsel and foreknowledge of God, ye have taken, and by wicked hands have crucified and slain:
Ask your first Pope...
Who believed he had been predestined
1Pe 1:1 ¶ Peter, an apostle of Jesus Christ, to the strangers scattered throughout Pontus, Galatia, Cappadocia, Asia, and Bithynia,
1Pe 1:2 Elect according to the foreknowledge of God the Father, through sanctification of the Spirit, unto obedience and sprinkling of the blood of Jesus Christ: Grace unto you, and peace, be multiplied.