Do Jews still observe Old Testament practices like burnt offerings? If Jews believe in a coming savior, why does Christ not meet all of their criteria?
I am not aware of any Jews who currently practice the Old Testament sacrificial rituals. This is at least partly due to the fact that the temple was destroyed by the Romans in 70 A.D. and has never been rebuilt to this day. If, at some point in the future, the temple IS rebuilt, then we may indeed see some of the orthodox Jews begin practicing the various Old Testament sacrificial rituals once again. But I seriously doubt we would see anything of this kind prior to a rebuilt temple in Jerusalem.
Most Jews no longer believe in a coming Messiah. Of the three main branches within Judaism, only orthodox Jews tend to hold to this hope and they do not conceive of Messiah as divine; he is merely a human being. As for why Jesus does not meet their criteria, there could be many possible reasons offered. However, much of it is probably due both to (what I would consider) a misunderstanding of the Old Testament conception of Messiah, as well as simply to ignorance and misinformation about Jesus’ credentials as the promised Messiah. As Louis Lapides, a Messianic Jew and Christian pastor, points out in Lee Strobel’s book The Case for Christ, most Jews have never bothered to actually investigate the evidence supporting Jesus’ claims to be Messiah.