Your video on the second link shows an alleged missile attack on a high-rise building in Kyiv and its consequences. It was the success of the Ukrainian missile defense at the very beginning of the operation, a Russian missile aimed at a military facility was shot down and its fragments fell into a residential building. If a Russian rocket hit the house, the house would not have a hole in the side, but a large pile of rubble.
You can see the missile explode. It wasn't a dud, the explosion takes out 4 floors, which on the average is 12 m in diameter. 12m explosion inside a building made of concrete and steel, not bricks. Who are you trying to fool with "fragments falling on the building". By fragments you must mean a warhead that explodes on impact.
Quote
The third video shows a missile attack on the building of the Kharkiv city administration, where at that moment a gathering of nationalists was taking place. These data were obtained and confirmed by Russian intelligence from several sources. The Russian special services have long hands, I recommend that the militants of the national battalions do not gather in groups of more than 20 people and do not stay in one place for a long time. The range of the Kalibr missile is more than 2500 km, the range of the X-101 missile is more than 5500 km, the range of the Iskander missile is up to 500 km, the high-precision missile can be struck from the sea, from the air or from the ground at any point in Ukraine at any time.
And that missile left the building standing instead of a "large pile of rubble".
Every time Russians kill civilians it's blamed on nationalists. Apparently nationalists are everywhere in Ukraine and that includes women and children.