What part of my argument is hard for you to understand?
"Russia's negative influence in the world" vis a vis Ukraine does not impact the American people or America's interest one bit. We gain nothing from Ukraine existing or not existing. We gain nothing if Russia 'loses' and withdraws, and we gain nothing even if Zelenskyy were to assassinate Putin and attempt to invade Moscow.
To the extent that Russia engages in activities that impact the U.S., our strategy to support Ukraine will not do anything to mitigate those activities. Losing 1500 tanks or 450,000 troops isn't going to stop nerds in the basement of the aquarium from hacking into our networks. On the contrary, it will most likely embolden them.
The only reason to take an interest in weakening Russia is to assist the security of our NATO allies, in particular the Baltic nations, Poland, and Germany. Which, I'm sure you've been following along, most Americans take a 'that's your problem, not ours' mentality toward European nations who should be capable of building a military strong enough to defend themselves against Russian invasion.
So if you're CNN and you are beholden to your shareholders to get viewer ratings, you aren't going to give this conflict a lot of air time. There isn't a clear connection to draw on why John Q Public should give a shit, and moral-value based foreign policy is not en vogue anymore because of the blatant hypocrisy. The policy to stay out of it is mostly settled, and there are very few people interested in debating it.
The Ukraine conflict is in the same category as India fighting China over a mountain in the middle of Asia, or south American countries having border wars over uninhabited sections of the Andes... both of which also don't get air time because it doesn't matter to people who live in the U.S.