No he could not have. Israel has been a contentious ally for the US, especially while a Democrat has been POTUS because they are actually independently capable of supporting themselves and have their own internal economy and military industrial complex.
The relationship between the United States and Israel started with us(The United States) peeling them off of USSR support in the late 60s[1], and if we abandon them they will either go it on their own or find another ally who has interests in the region due to oil still being important.
Biden as a representative of the United States had leverage over Israel, but not such complete control that he could just call Netanyahu and demand and end the war and have that be done with.
And that's not even getting into whatever the fuck you mean by " ... he is an avowed Zionist" [1]https://en.wikipedia.org/wiki/Soviet_Union_and_the_Arab%E2%8...