Real, lasting change isn't going to happen instantly and with a minimal of effort.
Movements have to be built, leaders have to be cultivated. These things take time. Mistakes will be made. There will be times when you do everything right but still there are setbacks. If you want your working-class peers to represent your ideals in government, you have to support them. You have to be willing to let them learn, you have to help them out financially and strategically. Because otherwise, the vast majority of them can't compete against billionaires and their favored picks.
Voting alone is not enough in today's climate. Angrily typing at each other and posting furious videos blaming everybody but ourselves is not enough. You continue to do the same but expect different results -- you're going to be disappointed.
Buh, buh, buh, buh, buh MY candidate didn't win their primary. Guess what? You've got at least 2 more years to build a movement around people who reflect your values and represent you. You can't snap your fingers and expect the world to revolve around you instantly. Winning takes time, planning, strategy, organizing, money, and so much more. There is no quick fix strategy, and I guarantee you that even if literally every single thing from this moment forward goes exactly right and exactly your way, it's still going to be the better part of a decade (or longer) before there's any chance of arriving where you want to be. This isn't a sprint. It's not even a marathon. Making progress means you have to keep going.