@Rapsey-0 
"trying to conquer the whole country" - 1. Not what's happening and 2. No one thinks that.
- Absolutely what is happening. They tried to take Kyiv from the start, remember?
- Everyone thinks that except for propagandized conservatives in the US
"They give their life to protect their homeland" - Many were kidnapped off streets against their will.
Interesting how you keep bashing Ukraine for conscripting people but never a bad word about Russia doing the same to a much greater extent.
Or how you bash Ukraine for not being a perfect democracy but never criticize Putin for being way more of an undemocratic dictator.
Or how you bash Ukraine for allegedly mistreating some of its Russian-speaking population, but not a peep about the widespread mistreatment of Ukrainians in the territories Russia annexed.
Where is your objectivity?
If you think otherwise: Go join them. Volunteer. You still can.
Why would I go throw my life away for a righteous cause that the major world powers have decided to let lose?
Besides, as much as the Russian invasion of Europe concerns me, I have a more urgent invasion here at home. My country will be conquered by Islam long before Russians set foot in it. I'm a patriot, I focus my efforts on the immediate threat that is on track to take over my country within my lifetime. Going to do the right thing in some distant country is something you can't afford when your own country is headed for extinction from a different source.
Literal Hitler-worship stares you in face - from Ukraine side - and you overlook it if not support it. Disgusting.
Where do you get that idea? I don't overlook it and I don't support it. What kind of logic is this... If you condemn the Russian invasion of Ukraine then you must be support the Nazis?
As to Putin: I have always said, it's war of Evil vs. Evil.
When it's Evil vs. Evil, only crazed morons get involved. Sit it out. Do something else. Constructive.
There's always a lesser evil. You seem to have chosen to focus all your efforts on badmouthing the lesser evil and making excuses for the greater evil. Or maybe you think Russia is the lesser evil in which case... Well I don't know what to tell you then. Keep accumulating knowledge about both countries I guess. Maybe one day you'll reconsider.
As for WW3, I suppose the question of how best to avoid it is entirely subjective. Personally I believe that rewarding a nuclear-capable aggressor by letting them take territory unopposed, and teaching them that you will let them get away with anything if they threaten to use nukes, is a guaranteed pathway to WW3 in the future. I think the best way to avoid it is to draw a hard line against that unacceptable behaviour and teach them that you will never allow them to cross it. Don't even try to expand your borders, don't even try to threaten us with nukes, it's unacceptable and if you do there will be hell to pay. You cannot have peace if your enemy knows you're not willing to risk a war.
Their arguments can't hold up to scrutiny, much less ridicule.