I'm so sorry. But the truth is that you don't stand a chance. Russia will get what it wants (it got the support of China that will offset any sanctions the the West might impose)
Ukraine will make Russia suffer though as they seem very determined to protect their country. And the rest of the world will make Russia suffer economically. So this is a lose-lose situation.
Ukraine was always going to lose, going up against Russia, as would most nations. Lose-lose is a better option for the people of Ukraine, if you accept they are desiring to defend themselves (which will entail a higher death toll); the other scenario is Russia wins (taking no losses) and Ukraine loses (nearly everything).
Ukraine can make Russia suffer if the West has given them enough weapons to do so. I'm skeptical that they did in time. They had seven years after Crimea to help Ukraine, and waited far too long to do it to a great enough degree.
That reminds me Finland's fights with the Soviet Union[1]. I can't find the quote now but at some point they said something along the lines of "We didn't win the Winter War but we came in a close second!"
Putin is alienating a lot of ordinary citizens, though. Do you think Ukrainians will peacefully consent to be governed for years after this? There is precedent in history for this kind of outcome, but that wound would be there for a long time.
I really hope you will stay safe.