You absolutely should not be waiting until the next election cycle. You should be voicing your opinion, voting in off-cycle and local elections, and voting for the least harmful option in every election, including the presidential election. It’s a huge machine and voting once every 4 years for the pre-packaged candidate isn’t an effective strategy if you actually want things to change.
Vote for people that make things better in your community, city, county, state, and then think about federal elections. Displacing the trove of do-nothings or detrimental actors in the smaller elections will change sentiment in the parties and will change the candidates they put through in the primaries… but it will take years for that to happen.
Either that or revolution… but that’s going to be a whole lot worse for everyone for a few decades, best case scenario.