No one who wants Trump will change their minds to Biden, there is no point in even trying for their votes. The youth vote, the Muslim vote, the African American vote are needed to win and nothing turns off those three groups like supporting the crushing of a powerless group by a larger technologically superior force supported by your tax dollars.
The current death toll shows your comment to be pretty false. Israel has been bombing indiscriminately and killing children for the past 2 months.
Source: https://www.reuters.com/world/middle-east/how-many-palestinians-have-died-gaza-war-how-will-counting-continue-2023-12-06/