Why are european far-rights and far-left systematically pro-Russia? Are there any far-right/left parties that aren’t ?

For the far-left, I don’t understand why they either passivly or blatenly support a regim that can’t get any more socially conservative than Putin’s and for the far-right, for people that claims all high thta they are the only true defender of their nations they are very compliant with someones that wanted all of us to freeze to death