Not OP, but my understanding is that voting for politicians who prioritize more sustainable policies and advocating for industry regulation to cut down on things like single-use plastics (or promoting EV use/infrastructure build outs) has a much bigger impact than recycling or not flying.

I (unfortunately) just don't think it's pragmatic/reasonable to expect enough people to make personal sacrifices/reduce QOL to make a dent. It's a tragedy of the commons, and we need some form of reasonable regulation to cut down on the worst offenders (probably carbon taxes) while we invest heavily in improving the technology so it makes financial sense to switch.

Renewables have come so far in the past decade and are now competitive with fossil fuels in terms of pricing. As the technology continues to become more efficient and cheaper, we'll likely start to see significant drops in emissions in addition to cheaper energy.*

*Assuming the US elects a rational adult to the presidency in 2028.