The trouble is that this is fundamentally a lose/ lose situation for Biden. If he's hard on Israel he'll lose votes, if he ignores Palestinians and Israeli war crimes he'll lose votes. There's very little at risk for Trump who can say what he likes on the issue; anyone pro Palestine or (unironic usage this time, to be clear) Rules Based Order or nuanced responses to international affairs is never going to vote for Trump anyway, and he isn't in power. In this case I don't think Biden has a smart play, from a purely political perspective, only bad and worse.
(While a lot of people including myself would like Biden to make a Moral Play and actually use the US influence to, well, stop the starvation, collective punishment, destruction of educational institutions, deliberate targeting of health sites and workers, targeting of journalists, targeting of diplomatic structures, targeting of aid workers, targeting of civilian structures etc etc instead of mildly pontificating about it I struggle to think of a single time a US President has actually made a genuine Moral Play, ie (try and) do something because it's simply the right thing to do, knowing that it'll potentially hurt him politically)