Unfortunately there is a tremendous amount of propaganda being peddled by all actors involved in this war. This is just objective reality and the nature of war, though partisans on one side or the other want to pretend that everything "their side" states are facts while everything the "other side" states are lies. Amazingly, some of this propaganda is being openly pushed despite being debunked, by people who admit that it is false propaganda! The rationale offered is that fake stories are okay if they "increase morale" (by those who seemingly lack the capacity to understand the concept of credibility or its importance).

Among unbiased observers with a grasp of the situation it is clear that Russia could be doing much more damage to Ukrainian cities, and we can only speculate as to why that is. They could be trying to save munitions, they could be doing it for public relations purposes, they could be doing it because they want relatively intact cities if they eventually succeed in taking over Ukraine, or any number of other reasons.

The one thing you can be sure about, is that anyone who claims to know with certainty what is happening in the war zone, or what the "true" motivation of Russia is at the current time, can be safely disregarded as someone who is either confused or pushing an agenda.