There is zero difference between the US invasion of Iraq and the current Russian invasion of Ukraine. Both were based on bull**** and lies. They all claim to be liberators. It is sadly laughable.
Same as US was bled out of there in defeat so will be the Russians in the end. Foreign money & weapons flowing in along with foreign fighters. Americans and their allies didn't even pretend to count civilian casualties they caused directly and neither will the Russians.
If the people of a country decide not to let an invasion succeed, it will not. Help from outside can be a deciding factor as it was in Vietnam and Iraq and Afghanistan.
Your familiarity with yours and your own skew your judgment in thinking your country is right regardless of the facts and atrocities your side commits, in your name. But the other side your side is attacking (whoever it may be) have a say in that too and so do others who decide to help who you invade.
Americans didn't learn from Vietnam and repeated it all again in Iraq and Russians apparently didn't learn from Afghanistan and are now repeating it in Ukraine. British, French and Germans etc. have all done the same with the same results too.
Those who don't learn from history are doomed to repeat it.