Many people say that the reason why Russia cannot attack Ukraine is because Western countries are assisting Ukraine, and Russia alone is already very good at dealing with 54 countries.
Before Russia launched a surprise attack on Ukraine, no country directly aided Ukraine. Only the United States received intelligence that Russia was going to launch a "special military operation" against Ukraine, and urgently provided Ukraine with Javelin and Stinger missiles. It was these two shoulder-mounted improvised weapons that kept Russia from moving forward.
Within two or three days of the start of the war, Russian troops had entered Sumy, Kharkiv, Odessa and the capital Kyiv in Ukraine. It can be said that Russia has been fighting for more than two years and has suffered nearly 500,000 casualties. In addition to the territorial gains gained within two or three days of the start of the war, not an inch of land was gained, and even some losses were made. By September 2022, the Russian army has withdrawn from Kyiv, Odessa, and Sumy to attack Kharkiv, and is only struggling to support in the Donbas region and the four oblasts of Kherson and Zaporizhzhia. Why?
Russia is not as powerful as they boast at all, it has long been seen, about a week after the start of the war, it can be seen that Russia is in trouble. Because Russia can't take Ukraine away in waves, you must know that the Russian army is prepared for a surprise attack and has a first-mover advantage, while the Ukrainian army is unprepared.
The shock therapy of Russia at the time of its independence was very serious about the decline in Russia's strength, and the economy was close to collapse. Since the 90s, other countries have been changing with each passing day, while Russia has not advanced but retreated, and this advance and retreat, their strength is too different from the world's advanced level. In the decades that followed, Russia basically gave up on high-tech and became a country that sold resources entirely. It's just that there are a few star weapons that can bluff people.