What would riots /civil unrest achieve for those who don't want to comply? Genuine question ...cant get my head round it.*
A riot doesn't 'achieve'. It is an expression of anger and tension, often by those who feel their voices are unheard in society. I suppose you could say it 'achieves a venting of their frustration and a knowledge their displeasure is finally seen', but that's all. It isn't about logical thought, it's often stems from oppression and poverty. As it builds momentum, you see looters join in for the heck of it, but as Martin Luther King said, 'a riot is the language of the unheard'.
It is never an isolated event or single issue that causes a riot, it always has historical and social issues that feed directly into it. In this case, Covid-19 plays on the difficulties already faced by many below the poverty line. Some parents may have struggled to feed children through this, they may not have coped parenting them with no school. Some gangs used the time to try and target more children.
The Tories give an untrue message about poverty and always punish the most vulnerable in society. They've been in power for ten years in some form or another. Public services, health services are underfunded, benefits have had huge issues (UC), child poverty has increased etc. All these statistics are also twisted by the government who fail to register those without homes but couch surfing etc as homeless. All of these things put pressure on people, but often have the most severe outcome for those below the breadline (half of BAME households were counted as living in poverty in July 2020, which is important when factoring in racial tension, as is targeting of the black community by Police). All of these things and more cause anger, people complain and are not listened to, nothing changes, things get worse - so it's expressed in (often violent) unrest.
Covid restrictions will have disproportionately affected those already struggling far more. Even basic things like living in an area with a lot of gang related violence and crime can make a big difference to whether someone wants to pop out for a walk or not. It's much more about general expression than achievement of a single objective.