I'm not sure if you're right: https://www.reuters.com/world/us-public-support-israel-drops-majority-backs-ceasefire-reutersipsos-2023-11-15/ -- and that's almost 2 months old, support for Israel has probably not gone up.

Ukraine is getting way too little support though from everyone, that's true. I think what they need is weapons and additional financial pressure against Russia, not like angry retweets and memes. Those are pretty much the modern equivalent of thoughts and prayers.