Of course the Red Army did not support resistance fighters! Resistance was both anti-nazi and anti-communist. Despite also fighting against nazi, they were not

Of course the Red Army did not support resistance fighters! Resistance was both anti-nazi and anti-communist. Despite also fighting against nazi, they were not their allies, Soviets had zero reasons to help them. And resistance fighters knew that and didn't expect any help from Soviets. The way OP frames the situation it sounds like the resistance failed because Soviets didn't help them. In reality resistance failed because they've miscalculated their powers against Germans, and because they did everything to ensure that Soviets won't help them.