The Drawdown project has made an impressive effort to rank the most important solutions available in their 2020 report.
Some of their findings are really eye-opening. Compare electric cars, which account for 12-16Gt worldwide reduction whereas a Plants-Rich-Diets would contribute a 65-92Gt reduction. Eating more plants might be 5 times more effective than driving an electric car to fight global warming.
Check out this Table of solutions ranked according to Gt of CO2 reduced/sequestered for two different scenarios correlated with temperature rise by 2100. Scenario 1 for 2ºC and Scenario 2 for 1.5 ºC.
There are many other surprising findings in this list of solutions. Please talk about it with people you care abouts. You may open their eyes and contribute to better understanding of solutions already available.