what do you think the current resurgence is to do with? the new strain being more virulent perhaps? the apparent apathy of people to stay at home? all are factors that have contributed.
if you recall the first lockdown, when you ventured outside it was like a ghost town, then people started venturing out. compare that to lockdown 2 and 3, its almost as if nothing has happened. The streets aren't as busy as normal, but they are busy.