Somewhat similar, but the bottom line is Ukraine is a recognized nation with international backing. Russia attacked them to gain territory. If Ukraine can beat this round of Russian aggression they get to remain a state and regain their lost lands. If they can’t beat the Russians back then it is an entirely different scenario. As much as I want to see them succeed there is a chance they could fail.
Finland also lost a huge chunk of territory to Russia back in the 1940s. They recognized they couldn’t beat back the Russians, struck a deal and moved on. They are now arguably better off than if the choose to continue the fight.
Gaza is not a state, the Palestinians had multiple a chances for statehood and a shot at peaceful prosperity. Instead they choose to continue to fight and commit terrorism. The current state of total war between Israel and Hamas are the consequence of their actions.