What kind of evidence do you need? That Azov militants wear SS chevrons, torture and kill captured Russian soldiers? That the soldiers of the Armed Forces of Ukraine use the houses of civilians as ammunition depots and firing points? That the provocation in Bucha was staged, filmed with professional film equipment and sewn with white thread? Are you sure that there is not enough evidence in this topic and are you ready to adequately perceive new ones?
Evidence usually something than just words. If Ukrainians really killed captured Russian soldiers in the way as it was described, I don't justify it, but you really want to say that Russians didn't killed captured Ukrainians? Like one of soldiers from Azovstal which was shown in one Russian video and later photo of him lying shot dead was published.
Ukrainians use civilian houses as ammunition depots and firing points - with this excuse you can justify all attacks on civilian objects. Like supermarket in Odesa - was it ammunition depot?
And Bucha, I still haven't saw any proof that it was staged, everything shows opposite. And professional film equipment - c'mon, now most of phones can film almost like professiona camera with 4K quality.