"Olam" is not on its own in Micha 5:2, but is combined with the word "days" which the KJV translated 5 of 6 times as "Days of old" but only here in Micah 5:2 used "everlasting". Coincidence that it is a Christian proof text verse? The KJV seems to have many of those kind of coincidences.
I have a Jewish friend who wrote a paper on this subject at the link provided. He is quite detailed but if you are able to find anything factually wrong with anything in it, I will pass it along to him.
...tell me your views on Jesus, His crucifixion, and His resurrection in the flesh.
I am not sure what this has to do with Micah 5:2, but my views on Jesus's crucifixion are not any different that other baby-savior-man-gods whose birthdays are celebrated on December 25. My views on Christianity can be found in Isaiah 24&28 here: