It isn’t all clear which is worse. In many ways Trump’s “support” of Israel, combined with an “America First” foreign policy (i.e. no foreign wars) may be even more likely to put Israel at risk, since it will give a “green light” to America’s enemies (including Iran) to pursue aggressive policies without fear of American intervention. Domestic anti-Semitism, on the other hand, is an issue in which Trump is clearly preferable from our perspective, as the WOKE wing of the Democrats appear to be taking over the party, and they include Harris and Walz, and they are openly anti-Israel and anti-Jewish (meaning opposed to frum Jews).
For Israel, the message should be that no matter who wins, their survival is in their hands and they need to be prepared to defend themselves with their own resources and give up dependence on American aid or the financial support of American Jews (e.g. raise taxes, build up defense industries so they don’t need imports, promote policies of national unity go back to having a third world standard of living so they can support a first world military without imports).