1- Israel has been killing Palestinians and stealing their lands decades before Hamas was even a thing.
2- Yes, the US is much much much worse than Hamas since they invaded several countries and killed millions of innocent civilians, they're even the only country to ever nuke another country, so yeah, the US is waaaaaaaaaaaaaaaaay worse than any other entity on Earth, it's probably a tie with Israel too.
Israeli settlers already kill Palestinians and steal their land, there's no peace with Israel.
It seems like you suggest people should not fight for their freedom and land and should just give up. That's a very cowardly point of view.
And yeah obviously Ukraine can still win, because the entire world is helping them, the world is also helps Israel and turns a blind on the massacres happening in Palestine.