Who are these people? I've been working from home and I've noticed a steep dip in my productivity.
I am not sure about the productivity aspect. Since I am client facing and most of my clients are on furlough my main work source has dried up. I'm doing other stuff for the team but none of it has KPIs.
Now I'm really depressed and have terrible productivity.
Not being able to go socialise with friends, see bands in concert and hang around in coffee shops has had an enormous impact on my wellbeing - it's entirely possible your productivity woes are due to the social impact.