There was a debate about Dutch flowers vs Kenyan. The debate was framed as "local vs grown in sunshine", e.g. the cost of growing in cold greenhouses vs sunshine. I think you know where this is going...
https://ecoligo.com/blog/2018/08/08/the-air-miles-debate-are... (https://only-roses.co.uk/U/files/Cut_roses_for_the_British_m... is the study). Even after accounting for distance and transport, the Kenyan flowers have lower carbon usage.
A book like https://www.amazon.com/Drawdown-Comprehensive-Proposed-Rever... provides the context needed to choose between options, and the solutions are often odd, like replacing old fridges which has a HUGE climate change benefit (because the refrigerants are 1,000s of times worse than CO2), but that's not a story that is told because, well I think complicated narratives lose to simpler ones.
After that, the My Climate Journey [2] and Work on Climate [3] communities are excellent entry points.
Climate is a big buffet full of all sorts of cool problems to help solve. I'm focused on carbon removal as an example, but we need millions of people working across all aspects of the planetary system.
[1] https://www.amazon.com/Drawdown-Comprehensive-Proposed-Rever...
[2] https://www.mcjcollective.com
[3] https://workonclimate.org