The US is a massive place. Yes the federal govt can suck but state and local governments are where you see the real day to day effects like roads, local businesses, utilities and parks.
Sit in on a meeting (a lot of stuff is streamed thanks to covid). Get to know the people in office in your area and what they stand for. If you want make your voice heard however you choose and give them some perspective on how an upcoming decision effects you. You can vote wisely and build a community with them from the bottom up.
You can have a surprising level of influence just by reminding people that voters exist and care enough to give input now and then.
GI Joe and BroForce