In Bucha, this is definitely a staged fake of Ukrainian propaganda, filmed on professional film equipment.
Here is a video of the cleansing of Bucha by the Ukrainian police, there, for the whole time, a corpse in military uniform flashed in the frame once, there are no civilian corpses there. The decision to provocation under a false flag was apparently made by Ukraine later.
You know, even the Nazis during World War II did not blame the victims themselves for their crimes. They at least spoke openly about their views. By your logic, did the Jews burn themselves in concentration camps? Unlike them, you are not only brutally cruel, you are also the last cowards. Did the Ukrainians themselves arrange the massacre in Bucha? Well, it's extremely easy to do when the city is under occupation for more than three weeks. In the occupation you are so proud of, because it is almost near Kyiv. Probably, people want to see your "velikaya rasseya" on their doorstep so much that they burn your fascist symbols on their backs. They rape themselves and their children, they shoot themselves with their hands tied behind their backs. Just to set you up, innocent sheep. Because the world has nothing to do but think about you.
Tell me, what is the logic of the Russian military to kill civilians when leaving Bucha? Why Ukraine staged this provocation, I can understand, but why would the Russians do it? I think the staged fake was made in a big hurry and the forensic medical examination, together with forensic experts, will soon shed light on this situation.