It's almost impossible to make it easy to support social projects: Gexsi is a search engine where 100% of all profits are invested in projects that are aligned with the UN's Sustainable Development Goals. With every search query you make via Gexsi, you are already doing something good.
In addition, the search engine sets high data protection standards and uses CO2-neutral servers for the search queries.

bw.gexsi.com

Image source: Screenshot of the Gexsi homepage.