It doesn't surprise me the least. The media industry is extremely careful about that. And when sometimes, successful streamers/youtubers/... talk about their se

It doesn't surprise me the least. The media industry is extremely careful about that. And when sometimes, successful streamers/youtubers/... talk about their setup, it is clear that audio is given a lot of attention. But I'm sure the simplest thing you can do before getting better equipment, soundproofing, acoustics and hiring a sound engineer is simply to get louder. Just up the volume, and if you are feeling fancy, use a compressor. It is well known that louder sounds higher quality, and for ABX tests, great care is taken so that the levels are equal since the bias appears even when the difference is minor. Extreme compression is also the secret behind the booming voice of radio presenter, and that effect also started what is known as the loudness war.