Russia is gettin North Korean troops to fight for them because they are losing so bad, but Russia is also an aggressive superpower hell-bent on invading even more countries with far better defenses than Ukraine.

This isn't accounting for Russia's disastrous demographics problem. The biggest reason they are moving so slowly is because they can build new artillery, but are demographically forced to do everything they can to minimize casualties.

It also isn't accounting for Russia trying to get a permanent peace deal 2 months into the conflict. That's not the behavior of a country bent on conquest.

Finally, I can't take people seriously when they are basically asserting that Russia believed they could take over all of Eastern Europe with just ~200,000 troops. When Ukraine changed from regime toppling to an actual war, Russia was caught with their pants down. They had to hire Wagner and draft prisoners to buy time to start pushing soldiers through training. If they'd been planning some large invasion campaign, they would have started serious troop training a handful of years prior and have millions of already-trained troops.