Like, if you just study Orthodox Judaism, you'll understand that their understanding of the Messiah is that he will be a non-divine human being, patrilineally descended from the Davidic dynasty, who will usher in the Messianic Age, bring all of the Jews back to the Land of Israel, restore Jewish political sovereignty over the land, rebuild the Temple in Jerusalem, and usher in an age of peace for all mankind.
In contrast, it seems like Christians look at these requirements differently because they believe that Jesus's messianic mission was not limited to the restoration of the Jewish people, but also involved the salvation of humanity through his death and resurrection. As a result, many Christians understand Jesus as the fulfillment of the Temple, interpret certain messianic prophecies spiritually or symbolically, and believe the remaining prophecies about the restoration of Israel, universal peace, and God's kingdom will be fulfilled at his Second Coming. However, from a traditional Jewish perspective, the Messiah is expected to accomplish these things during his lifetime, rather than return later to complete them. This is one of the fundamental reasons why Jews don't recognize Jesus as the Messiah, since the conditions associated with the arrival of the Messianic Age have not been fulfilled.
In his Mishneh Torah (Hilchot Melachim uMilchamot, Chapters 11–12), the Rambam outlines these expectations and sets criteria for recognizing the Messiah. In doing so, he draws directly from passages such as Deuteronomy 30:3–5, Numbers 24:17–18, and Zephaniah 3:9. Similar messianic expectations are also reflected in other passages of the Hebrew Bible, including 2 Samuel 7:12–16, Isaiah 11:1–12, Jeremiah 23:5–6, Ezekiel 37:21–28, and Isaiah 2:4. According to the Rambam, if a potential Messiah fails to accomplish his mission or dies before fulfilling these requirements, then he cannot be considered the promised Messiah.
Going back to the debate of interpreting the scriptures literally versus spiritually, I believe that early Christians came to interpret these prophecies in a more universal and spiritual sense, partly because if you took the messianic expectations concerning the restoration of Israel, the rebuilding of the Temple, and the establishment of worldwide peace as concrete events that the Messiah was supposed to accomplish during his lifetime, Jesus would not have fulfilled those requirements. He did not restore/return Jewish political sovereignty, gather the Jewish diaspora back to the Land of Israel, or establish an era in which warfare and conflict ceased to exist. Instead, the Romans executed him, and Judea remained under Roman rule.
It seems to me that following Jesus's crucifixion, his earliest followers were faced with a real theological dilemma because they had believed that he was the promised Messiah, yet he had died without accomplishing many of the things traditionally associated with the arrival of the Messianic Age. Rather than concluding that Jesus wasn't the Messiah, they came to understand his death and resurrection as part of God's divine plan (You can see this phenomenon in some members of Chabad who venerate Rebbe Menachem Mendel Schneerson as the Messiah), which subsequently shaped how they interpreted the messianic prophecies in the Hebrew Bible. In a way, I see this as post hoc theological justification, where they reinterpreted the scriptures to accommodate the belief that Jesus was the Messiah, despite his failure to fulfill certain expectations during his lifetime.
Now, I'm not suggesting that Christians need to abandon their beliefs or accept the Jewish interpretation as correct. However, I think there's a difference between disagreeing with another religion's theological interpretations and not understanding why its adherents hold those beliefs. I think some Christians approach Judaism primarily through the lens of their own religion rather than trying to understand Judaism as a distinct religious tradition with its own understanding of messianism and the relationship between God and the Jewish people. However, why do you think it's still difficult for some Christians to understand the Jewish perspective on the Messiah, even if they ultimately disagree with it?