It's so sad that you've noticed people avoiding eye contact and conversation, etc
It's not been like that at all where I live. Ever since the first lockdown, far more people have been out walking locally and I can't recall a single one over all these months that hasn't given me a cheery word or responded to mine. Of course, when passing, everyone does the 2m+ version of the do-si-do and one often ends up shimmying into the road or someone's driveway/gateway

Without fail, there's always a thank you and a smile - yes even behind a mask because you can still tell - and a cheery 'morning' 'lovely day' or 'nothing personal' as you avoid them like the plague

It's been the one silver lining for me throughout this that everyone in my neighbourhood seems more relaxed and friendly about a quick chat in the street.
Having said all that, all bets are off when it comes to supermarket visits!! Even I turn into a growling rottweiler sometimes when I see people with their masks dangling under their chins, pushing past everyone and literally breathing into people's faces by reaching across to grab what they want from the shelf! Grrrrrrrrrr. They're very much in the minority though... and I promise I haven't bitten anyone yet