you have never even read Isaiah, have you?
I knew this was coming. This shows you are reading Paul into Isaiah.
Isaiah foresaw a messiah that will bear the sins of the world but he did not see a cross, neither did he see it as a victory. It was a series of visions that the Holy Spirit revealed to him and he wrote it down. To say he “look forward to the cross” is reading into it.
cruxifixction was a Roman invention that came in much later.