I think I understand your situation, a lot of the times I feel the same way. I think it's more realistic to focus on those close to us versus trying to solve the countries problems by ourselves. Everything I read or hear is just a study in what are good arguments to bring up and positions that make sense while reaching across the aisle. I consume conservative media and engage in online debates with conservatives for this very reason. It's all just a preamble to understand and try to reach someone on a topic.

There are definitely times and places where it's not welcomed (like in group settings), but if you continue educating yourself and understanding what fallacy they've indoctrinated within themselves, you can find those good times to engage. For example a recent immigration conversation I had with a relative, didn't go so well. Afterwords I reflected and found a good response asking them, "If masked armed people showed up to your neighbors house and started dragging people out, would you intervene or sit there watching?" It put them into the perspective of actually being there during a raid of someone they knew and benefited from, also allowed them to feel the fear and hopelessness when authoritarians come crashing into your reality. It's not much but it's a start and you just gotta go from there one step at a time.