A trial that took place with nobody representing any defence after the new war started by a non-neutral nation is not reliable. It's frustrating that it was held at all because it's made the entire issue so muddy that it will likely be decades before reliable truth is found when governments start releasing classified information in limited hangouts.
You either have not spent any time reading through the evidence, or are willfully distorting the truth.
Considering their entire argument was to assert with zero evidence it was Ukrainians who did it, then to claim all the evidence showing otherwise is unreliable and we'll never know the truth, I think we can probably answer with a reasonable degree of confidence they are purposefully seeking to mislead.