Russia was exercising some restraint earlier. Punishing brother Orthodox Slav civilians was not the aim. Russia wanted very much to get a look inside the dozen or so biolabs in Ukr. and reduce the NATO,(USA) war machine that was 8 years in the making. The main live fire training was directed towards Donbas, majority Russian-speaking Ukr. citizens. These civilians were slaughtered by predominantly USA-provided munitions, training and technology.
As of today, Ukraine has no air support other than drones. Most of Ukraine has no electricity, fuel (diverted to the war machine) or potable water. A satellite photo of nighttime Ukraine looks identical to one of North Korea. Russia did not sabotage the Nordstream pipelines. It was in their interest to allow Germany to find accommodation to somewhat ameliorate Europe's energy problem. The USA destroyed the pipeline, which took away any chance of Germany's economy being somewhat protected. Germany was the economic engine of the EU.
Not any more.
When the ground freezes in the next few weeks, Russia will come across the border in force; I have read estimated troop strength of the force at 300 to 700 thousand personnel.
Ukraine is committing suicide, and the USA is providing the rope.