As opposed to transitioning to EVs, building renewables or developing tech like CCS, reducing consumption is the crucial step not discussed in policymaking so environmentalists do consider it a focal point. It's not an individualist solution, it comes from effective proliferation of measures that promote an alternative lifestyle.

As for voting, by all means do it if everyone else is, but keep in mind that if nobody did, leaders wouldn't have a public mandate. As the saying goes, if voting changed anything, they wouldn't let you do it. Politics is more than just the ballot box, its something one should be engaged in every day on the local level.