Tell me in your own words what requirements these are.
In no particular order:
Restore the lost Tribes
Rebuild the Temple (was still there in J's day)
Restore the Levitical Preisthood
Restore sacrifices (why is J was the final sacrifice?)
Universal Knowledge of G-d
Universal peace and end of warfare
Gentiles stream to Jerusalem to learn the law (Is 2:2)
Restore the Jewish people to full Torah worship
Restore the Davidic line
Messiah ben David will be a married man with children
Jesus did none of those. Christianity claims 300 + fulfillments but when closely examined, they all are bogus. The passages are either about David, Solomon, not messianic at all or mistranslated. There is no 2nd coming in the OT either. The messiah ben David will perform all tasks in one human lifetime, otherwise, if anyone falls short of the tasks, like Jesus, Bar Kochba, Shabbtai Tzvi and many others, they are just failed messiahs. Messiah will NOT be god or divine. That is a Grecco-Roman myth that made the former pagans of the region accept this new religion of christianity. He will not be a god-man hybrid, a demigod or 100%man100%god (hypostatic union). Furthermore, in the 3rd temple, ALL Jews and Gentiles must be circumscised to enter the temple courts. (Ezek 44) Now how can that be if Jesus ended the law?.
Speaking of which, there are many claims about what Jesus did that are NOT part of the messianic tasks. There is NO prophecy that messiah will end the law or "fulfill" the law. There is NO prophecy that there will be a "law of christ". There is no prophecy that messiah will be divine. There is no prophecy of a second coming. There is no prophecy that messiah ben David will suffer and die. There is no scripture authorizing human sacrifice or human vicarious atonement. There is no scripture that says that ONLY blood atones (Note: Lev 17:11 is incorrectly quoted by Hebrews 9....Lev 17 says DONT EAT blood because its only purpose is atonement...it is not a food, also found in Acts 15) Lev 5:11 FLOUR atones.
There is no scripture that authorizes suffocation on a Roman torture device (cross) as a kosher sacrifice. His throat was not slit, his blood was not sprinkled on the altar by a priest, his fat and ofal not burned.
That is just a partial list of reasons of why we reject him. There are many, many more.