Saying there are countless issues is another one of those convenient distractions. Of course its complex and there are many factors, but we have one basic issue: greenhouse gases.
We will not get to carbon neutral(or a global net negative) by slowly getting used to things by word of mouth. Not by signalling through market forces that we are willing to pay for pea protein instead of meat. It has to be political, it has to decisive and radical action at this point. A carbon tax that makes meat much more expensive instead of being subsidized. Completely changing the funding of transportation from being car focused to public transportation focused. And, perhaps most important of all, government oversight and enforcement with teeth that does not shy away from nuking a company with fines if it steps out of line too often.
All these what YOU can do talk carries the danger of obscuring what needs to be done at a societal and global level.