You and your mum, and your neighbours, and their neighbours can stop eating meat - that's 15% net C02 reduction straightaway. We could all also choose to reduce our consumption of things we want but don't actually need.
I suspect that of those that do protest, most still eat meat, consume all forms of tech gadgets, sit on their social media driven computers helping burn energy, and will walk into jobs and professions that support unnecessary (but nice) consumption.
I'm confident that nature will take care of things however, through ever greater natural disasters and loss of land. So, everybody just chill (buy an C02 producing air con system) - Nature's got this one.
Meat eating is nothing like that number. The figures used to get there are wildly off. Electricity production is governments responsibility. We could easily be carbon neutral there by now if we hadn’t had the silly aversion to wind while being probably the best country on the planet for wind power.
Consumption and carbon footprint are ideas spread by fossil fuel lobbies to dodge their responsibility. And the green lobby and it’s penchant for telling people off so they can feel virtuous fell for it hook line and sinker. Thankfully it’s not just the crusties that are working on this now.
Simple things we could do: insulate homes, move to renewables and nuclear, decarbonise most transport, all doable today with little impact.
Pretending we can change human nature en masses is just delusional. That’s not how people work.
We didn’t stop smoking indoors by asking nicely. We didn’t remove toxic substances by asking manufacturers nicely. We didn’t stop single use plastic by asking nicely. You set regulations and people adapt.
Sadly we’ve got a government who doesn’t believe in government and is ideologically bent on doing nothing in response to any issue.