Jews in the time of Jesus were not allowed to paint images. Since Jesus pretty much never left Palestine, it would have been hard for him to get a portrait painted.
What is the true appearance of Jesus?
For many scholars, Revelation 1:14-15 offers a clue that Jesus's skin was a darker hue and that his hair was woolly in texture. The hairs of his head, it says, "were white as white wool, white as snow. His eyes were like a flame of fire, his feet were like burnished bronze, refined as in a furnace.”22 Mar 2021
What was the first image of Jesus?
The oldest known portrait of Jesus, found in Syria and dated to about 235, shows him as a beardless young man of authoritative and dignified bearing. He is depicted dressed in the style of a young philosopher, with close-cropped hair and wearing a tunic and pallium—signs of good breeding in Greco-Roman society.