“Have you a replacement for the Messiah - or GOD?”
Was there world peace in the 1st Century? Nope, quite the opposite, especially for Israel.
Did the Jews get ingathered to Israel? Nope, quite the opposite as many left voluntarily during and after the Roman conquest in 70, and many were forcibly removed.
Did he rebuild the Temple? Nope - it was standing already for hundreds of years when he was born, and stood for about 40 after he died.
Was there universal recognition that the God of Abraham, Isaac and Jacob is THE ONE AND ONLY God? Nope, not then and not at any moment since then.
Jesus failed...and even Christians admit that as a matter of faith, insisting that he’ll succeed when he has a do-over (which you call the “Second Coming” - and would actually be the third, since you claim that he came back 3 days after he died...and didn’t accomplish anything then, either).
As for replacing God...the very idea is absurd on its face. God is God - read all about Him in the 5 Books of Moses, in the Prophets, in the Psalms and in the Talmud. I may not be a religious Jew who abides by all of the rituals, but I very strongly believe in ONE God - ONLY one, not 3.
If you are genuinely curious about why Jews utterly reject Jesus, go on YouTube and watch several of the videos that have been produced by Rabbi Tovia Singer. He is an expert in both the Jewish Scriptures and the Christian Scriptures, because such knowledge is necessary to de-program ignorant Jews who have been taken in by missionaries.
Is Judaism the only religion worth following; or can I expect another?
But what kind of Jew are you?
Hassidic Orthodox. Modern Orthodox. Haredi Orthodox. Reform. Karaite. Moderate Reconstructionist. Haymanot. Messianic.
(It helps to know who I am dealing with.)