[tdeck]

Honestly it sounds like you just want to give yourself an excuse to stop engaging. This reads like "I ate a salad once and I didn't like it, so I'm done with vegetables entirely, it's hopeless". Then the rest is you complaining that other people are unserious?

Going to protests is usually not much fun. There are all kinds of people there that you might not feel much in common with. People will make signs that focus on things you don't care about. This is normal! Protests can also easily burn a person out, so people try to have fun if they can because it's important to sustain pressure. The fact that someone dresses up, has a joke on their sign, meets a friend and smiles, or takes a selfie is not an indictment of the person or their protest.

Resist the urge to wallow in contempt for those people, particularly when you haven't done anything that has been effective.