Russia has given everything it has and it still can't claim Ukraine as its own. Putin just said he considers Ukraine to be Russia already. They tried to take Kyiv so what's that about sovereignty? And many tens of thousands of "liberated" Ukrainians in Mariupol and other places.
You can frame it any way you wish, I'm just an outsider and don't have personal affinity for either side. If I had a personal connection I might think differently. Various analysts have given several different reasons why they prefer to take it slow, and I'm not going to rehash them all here, but many of them sounded logical. For example, now Iran has different options in their war with US/Israel and various analysts say their best bet is to get into a slower attrition war with Israel, exhaust Israel's AD, don't do anything drastic to pull the US in too much. Similar has been proposed with Ukraine, like Russia could have done something drastic after the bombing of the strategic fleet, but that might have pulled the US in, it was a trap where the Ukrainians counted on a massive retaliation. Russia may prefer to attrit Ukraine more slowly. Russia has the Oreshniks and they could mobilize more troop if things got really critical. Some have suggested Russia is advising Iran right now telling them to keep a cool head and don't, for example, attack Saudi oil. Would you at least admit there might be such considerations?
Russia can’t do anything “easily” militarily. You think they want to be mired in a war of attrition with Ukraine? If they could’ve destroyed Ukraine, or taken out its leadership, they would have. Have you seen the videos of Russian soldiers going to the front on personal motorcycles? Russia’s soldiers have low morale and are ill-equipped. Russia has nuclear weapons and that’s about it.
You really think they couldn't take out the leadership? They don't have the bombs to do it? They don't have the intelligence? Come on man, there are many reasons you don't take out leadership, I very much doubt they lack the ability. Like Israel/US hasn't taken out the ayatollah and Trump claimed he didn't want to... yet. Said he could at any time. Is that cope and the truth is they haven't been able to? The motorcycles, I think there was talk about donkeys as well lol?, well some have claimed there was some advantage to using motorcycles, but that may have been a cope, I don't know

It is admitted that Russia produces more missiles and military hardware in a month that the EU plus US does in a year! This is mainstream sources saying it.