Well, for a start they could make attempts to stop supplying weapons and parts that can be used offensively by Israel.
They could also introduce some actual consequences for the breaches of international law, which could temporarily put Israel in a slightly worse place, but in the longer term could help to stabilise the issue, by making them think more about the offensive actions they are taking (which are escalating the cycle of violence).
Short term consequences for Israel could also cause disruption within Israel that leads to a change in government, as the people become more and more aware Netanyahu has completely messed up and couldn’t give a rats arse about them. This would be good for the people of Israel and their safety.
More time and effort (Israel and US) could then be focused on building better relations with the Middle East, instead of causing issues, and paying lip service to it, which could lead to more influence over whatever problems and threats they perceive. Better relations would not be equivalent to a continued occupation of Palestine that dehumanises people and treats them unfairly.
They could focus more on helping to create a Palestine (and other similar places) where people have more to hope for than vengeance and are therefore less likely to be exploited in a way that increases the level of threat to Israel.
That’s my simple lay persons thoughts on the situation. I am sure somebody else could do a better job.
But I don’t think US will bother with anything like that anyway, because they obviously perceive some benefit to themselves with the way they are handing this shit show. And it would involve being much braver than I think they could manage. If your attacking you feel like your doing something to resolve the situation, it’s probably more comfortable than accepting that there will always be an element of risk that can never be completely controlled.