The idea that Israel is dictating US foreign policy in the Middle East comes from a place of fundamental misunderstanding of the geopolitical and cultural realities of the situation. The US government will have significant geopolitical interests in the region as long as they have cheap oil (so, for the foreseeable future), it will always need friendly locals willing to share intelligence to keep an eye on things, especially someone who opposes and is willing to work against Iran, it will always need ports, airfields, and infrastructure to grease the wheels for military operations in the region, and it doesn't need Israel's encouragement to do any of this.

It also fails to understand the motivations of the right-wing segment of the government/population and how much power they have in US poltiics. There is a wide and deep streak of evangelical fundamentalism within American Christianity that has a disturbingly intense focus on biblical eschatology, including actively trying to fulfill the prophecies that are supposed to herald the return of Jesus. Israel features prominently in these prophecies so these true believers will never not back Israel 100% of the way regardless of their politics, atrocities, etc.

Yes, Israel has a powerful lobby in AIPAC. Yes, they spend a lot of money trying to bring our politicians in line with their goals. But we are already extremely well-aligned for cultural and geopolitical reasons, so what the claim that Israel is controlling US foreign policy amounts to is saying that a kid sticking his hand out the window of the car is materially affecting its course. Even if it wasn't a borderline-antisemitic (and I use that term VERY hesitantly when talking about Israel, because they don't) conspiracy theory it just doesn't make sense: there are far greater forces at play.