If you find the climate change debate a bit depressing, you can always try getting interested in biodiversity. The UN COP 15 biodiversity summit will be held in China in April this year, after being put off twice for Covid. Read up on it beforehand, follow its decision making. See what your country is doing to help build a Global Biodiversity Framework. Awareness is the precursor to action, and as a global citizen you are just as important in resolving these problems as anyone else. As to what you can do about it, even if your only action is to advocate by voting on this site, that is a positive action. When this site grows , who knows, your vote might count!