For me there were two keys

1) a single loudspeaker for the speaker’s voice. For some reason stereo is tiring. Brain can’t locate the speaker in space already and then the voice comes from two different places? I don’t know. Hugely helps me anyway.

2) my own voice mixed back into that speaker. Louder than you’d think. Cuts my volume by maybe 30%. Voice is much better at the end of the day. Echo cancellation on zoom takes it out completely.

Those two tweaks changed everything for me during the pandemic. It took a lot of messing around. For example the speaker I use is a $15 Logitech because higher quality speakers feed back. And the mic is a long shotgun which minimises the amount of sound it picks up from that speaker.

All this should be easy.

It is not.