People are concerned about Palestine because we're the ones doing it indirectly. It's not US or European troops on the ground, but it's almost entirely funded by the US and Europe and our governments fully support it and help it to keep going. Whereas the war in Sudan, while also very bad, isn't our fault. Maybe if we could get our own governments to stop bombing little children, after that we could consider intervening to stop other governments from bombing little children, but as it is, we can't even get past step 1.