My experience with this extends to private offices as well. Maybe I just drew the short straw with my neighbors but, if I'm managing people, I want to give them the courtesy of a noise-free call where they don't feel like they're being spied on (or like I'm being distracted).

I tried maybe 3 or 4 private office solutions during the pandemic's height, and each suffered from this. The "phone booths" are the best solution, imo, but they eat up credits and/or are always occupied.

I'd unironically like a huge warehouse of phone booths (like 3x3 offices) I can hole myself in all day. Why does that not exist? Is that just a cubicle farm with extra steps? I joke to my partner about setting up shop in our closet because it's quiet and distraction free.