Here is an example of how going door to door to ask people to reduce their waste and teaching the importance of recycling can actually do. This is an example of a poster that you could create. You can choose to spread awareness digitally by posting this or physically printing this out and posting it around. Be aware of the amount that you print and post around or else you may become hypocritical as this could create a lot of waste.
Just be mindful of the waste your produce can make a huge difference. If you are conscious of the waste you are producing and trying to reduce this, I think that you are already making a valid difference.
Watch this video to see how just going to some peoples doors and putting 1 poster can really make a difference. Note that COVID-19 measures were in place to ensure safety of all.