That is a narrow Christian interpretation, allegorical at that, and by not means the only informed opinion there is.
Judaism does not know the "devil," and never did. Nowhere is there any association made between the serpent in Gen 3 and Satan, the obedient angel of God mentioned in Job 2.
Mosaic Judaism neither speaks of the "fall" of man, the need for his "salvation," nor does it prophesy of, or find any need for a "messiah." Judaism believes in a human (not divine) messiah who will defeat Jewish enemies and re-establish the kingdom of Israel, not a God in human form who will save the souls of his beloved elect, Jew and Gentile alike.
So, no matter how you turn it around, neither Moses nor Judaism could have ever have prophesied of a man-God coming to save the souls of the world from the "fall" in Eden, while fighting with a stubborn angel who decided to desert God. To the Jewish mind that is a preposterous and deliberate distortion of Judaism!
Jewish expert interpretation of Isaiah 57 likewise leads to a different conclusion than the one created by the Christians.
There are numerous sources that offer their interpretations. I realize that you may believe some and reject some, but that does not make your interpretation true or even valid.
I highly recommend you consult authoritative Jewish sources for a more informative view on this subject. You may be amazed.
All I asked of you was to show me where Moses writes about Jesus, as claimed, not where you allegorically interpret that he may be speaking of Jesus. As expected, you didn't show me where he writes about Jesus because Moses never wrote about Jesus (why would he!?), but also as expected you gave me extrapolated allegorical inferences, allegation, and suppositions as to what might be "Jesus" in the OT.
OK, then I can’t help you. May the Creator reveal Himself to you.