Corporations have been shifting blame on to regular people for years, the whole carbon footprint concept was basically invented to shame individuals.
While individual action is important, the biggest individual action we can take is really for societal and legislative changes.
For example, in order to avoid motor vehicles, and flying, the government needs to invest money into viable alternatives. We need better bike, active transport, and transit systems. In order to eat more veggies and reduce agriculture emissions we need the govt to subsidize and incentivize those alternatives to the consumers. Cause poverty certainly gets in the way of dropping things like Dairy especially. Second hand goods, without enforcement of the right to repair means that you're gambling on whether or not you're going to be able to find someone or parts to fix your used thing in the event something breaks.
I could go on, but the gist of it is access to a lot of the things you're asking for requires government change. Some folks are lucky or diehard enough to find the means to make these changes themselves, but the everyday person needs help.
I will also say, this isn't a doomerist view on things. The government at all levels has been using the money from the Carbon tax to fund things like the Greener Homes Grant, Bike and eBike rebates, and EV rebates, and adoption is high! Look at all the houses switching to heat pumps in the last few years since these rebates have come into play!