Russia is well balanced against the aid everyone else is giving to Ukraine; it's a war of attrition, where both Ukraine and Russia are being worn down and nobody's quite sure which side will collapse first.
Other than just being cheapskates, the west has a fear that {if Putin fears his regime may collapse, he may personally order the use of nukes}, and also that even if he doesn't and Russia does collapse then rogue actors may steal some of the nukes.
building military is much much more expensive than paying influencers.
Russian propaganda machine is incredibly strong, because it was perfected on their own citizens for basically century now. They spend billions on pure propaganda.
While with military - they relied on propaganda as well. They projected power while not picking conflicts with anyone who can punch back.
Ukraine appeared too big to swallow this time and everyone can see, that king is naked. Russian military is a sham compared to US. Like, incomparable to be honest. But problem is that propaganda is much stronger than military. So west made a mistake dismissing russia because of their weak corrupt military while being invaded by propaganda.
West has nothing against russian propaganda machine and this is what thrtuthly terrifying to be honest.
Other than just being cheapskates, the west has a fear that {if Putin fears his regime may collapse, he may personally order the use of nukes}, and also that even if he doesn't and Russia does collapse then rogue actors may steal some of the nukes.