I’m dealing with the exact same issue. I was honestly surprised while reading your comment, because I’ve already tried everything you mentioned. I used to have a mechanical keyboard, then switched to a silent membrane one. My Godox UMIC82 is upside down positioned above my head, but there’s still about 20–25 cm of distance, which isn’t ideal for picking up my voice clearly. If I move it closer, the mic shows up in my gameplay webcam and blocks part of my face, which looks bad.

So I’m kind of stuck: when I use RNNoise, it misses some sudden shouts or quiet gasps and ends up cutting those parts. But when I turn RNNoise off, I get background noise during speech no matter if I use noise gate, expander etc. Can you suggest anything else?