Register to vote: https://vote.gov
Contact your reps:
Senate: https://www.senate.gov/senators/senators-contact.htm?Class=1
House of Representatives: https://contactrepresentatives.org/
Getting the government to do literally anything that's not evil takes a level of effort organization and resources that dwarf the effort to just do it your fucking self, and for all that you get some half passed means tested bullshit.
Direct action, fancy political theory for "just do some shit" is the only thing that has ever worked.
You want clean water? Secure water resources from corporate interests, ask the local water treatment technicians what they need, set out a rain barrel, figure out a desalination strategy, figure out where There's waste or pollution in the system and see if you can crack down on it.
You want hones with heating cooling and electricity? Grab a wrench. Maybe break into some empty units abd get people housed. Whatever.
You want free healthcare? Talk to the union reps at your local hospitals, get your local med school to hold more classes.
Clothing! So this ones climate dependent, but tl;Dr: grow some shit, sew some shit. Or pester people who already do.
Transportation and internet? Work out the best control system abd standards with some rail nerds, then start tearing up pavement.
Education? Find some people who know shit. Have them be at the park at specific times. Make it known. Maybe bring chairs.