Do you know what ergonomics is ?
Ergonomics is a posture, and in this case an ergonomic installation means one that respects your own body ergonomics.
Marketing would have us believe that ergonomics could be found in objects, but this is not entirely true.
You can have the best ergonomic chair in the world if you're slumped in it, but it's clearly not going to promote your well-being.
That's why being aware of your posture when you're working is essential.
You're going to have to try a few different postures to finally find the one that allows you to be productive without any pain at the end of the day.
I set up an ergonomic workspace at home