Palestine

To answer your question on why the US supports Israel unconditionally:

1. Christian Zionism and end-world apocalypticism, while this may not be the main reason it is the most obvious and manifests most obviously in the Republican Party.
2. AIPAC money. Biden has received $4,223,143 from pro-Israel donors throughout his career.
3. Israels serves a geopolitical interest in a region critical for international trade and energy. It is an outpost of US imperialism, an unsinkable aircraft carrier and an intelligence and surveillance hub.
4. Israel does the dirty work that would be unpalatable to US voters but serves US interests. Such as supporting the apartheid in South Africa, the Guatemalan genocide and the Rwandan genocide. In the past it was easy to dismiss any criticism of Israel as antisemitism or blood libel, giving them a blank check to act with impunity.

Though I disagree on your assessment that Hamas isn't any better. When was Hamas guilty of a genocide? Hamas on multiple occasions was willing to accept a 2-state solution on 1967 borders. From the 2002 Arab Peace Initiative to their 2017 charter. Israel never accepted any peace and rejected any possibility of a Palestinian state. Instead expanded its settlements and evictions in the West Bank, and put Gaza in a blockade since 2007.