The OHCHR report you linked doesn't state who bombed, from what I skimmed. But I'm sure you read it and can point me to such a finding?
Speaking of MH-15, who slaughtered people in Bucha? Which side is bombing shopping centres during the day and apartment buildings in the night? We all know that. And now you come with a source which does not establish that Ukraine bombed civilians and you want me to believe it wasn't the Russian side which has a well-established pattern of doing the exact thing? In Chechnya, in Syria, in Afghanistan?
I'm not saying that you can't -- if the evidence is there, go ahead, post it. But actually post evidence and not what you decided was evidence without even reading half-way through the thing.