No no...
Daniel chapter 9 has been considered Messianic by numerous rabbis of past times, and in Daniel 9 the Messiah is "cut off" (killed)
and THEN "war continues until the end."
Also, in Isaiah 53 (also considered Messianic) the Messiah is killed for the sins of his people but later sees his spiritual seed (offspring).
In addition, you can't show me the scripture that says the Messiah has to accomplish everything in one lifetime. That's a belief by some, not a scriptural decree.
And in addition to that, there's only two places in the Old Testament that predict / prophesy the TIME of the coming of the Messiah. Both are Messianic. Both pinpoint the same time period - the 1st century when Jesus appeared as the Messiah. You can view them below.
1. Until Shilo Comes -
Until Shiloh Comes
2. Daniel's Prophecy of the Messiah -
DANIEL'S 70 WEEKS PROPHECY