Not having reliable data about private lockdown behaviour doesn't mean that compliance didn't happen overall though? My point is why is that the only measure you are using?
For the majority of people, most or all the rule breaking they could engage in would have to be in the private sphere: people's homes, premises that weren't open to the public or meeting in those public places they could access unnoticed. For the simple reason that people can't go to workplaces that are locked, events that are cancelled, shops that aren't open etc. Hence the stats you mentioned on those things. You can have your neighbour round for a illegal lunch with more ease than you can break into Primark.
That makes the lack of reliable data on what people were doing on the quiet and who they were having in their houses particularly important: because that's actually the main space in which any rule breaking would have to occur.
You haven't provide any evidence that compliance didn't happen in any sphere....
Yes, people don't tend to provide evidence for things they aren't arguing.
Why would you not include mask wearing when discussing a pandemic & compliance?
Because what you were actually discussing and drawing conclusions about was support for lockdown and support measures, and they're neither of those things. They're just not. If you want to make an argument for how purchases of masks reflect compliance with lockdown and views on financial support measures, by all means do so, but you haven't thus far.
I'm genuinely confused by what argument you are trying to make. That people didn't comply with anything because in their homes they broke rules? That hardly any of the population wanted lockdowns? Whatever it's irrelevant & boring others I'm sure.
If you're confused, your certainty about relevance and the feelings of others on the matter is rather misplaced...
But I'll spell it out once again: we don't have reliable data on compliance with lockdown regulations in the private sphere, which means when we talk about observance we need to caveat it appropriately. It's actually rather simple.