I find it hard to bring people to communism because telling them the truth of our system most often leads them to a doom spiral where fighting back against capitalism seems impossible and that the world is fucked. I feel bad because I feel like all it does is make people depressed. It's too much. People are tired and burnt out from daily life too much to handle it.
I think the majority of my life since 2020 has been spent trying to figure out how people can look at history (specifically the history for which we have overwhelmingly evidence) see various figures protesting the existing power structure through revolutions/direct action and still come to the conclusion that they were liberals operating within the confines of liberalism. Yeah manufactured consent and all that, but we live in an age where information has never been this accessible and people still stick to Cold War shit from 60 years ago. Makes it hard to believe things will change
People's ideology and beliefs severely, severely constrain what they are able to believe and understand. there's like, what, 4+ billion people who believe that magic invisible beings that control their fate? It runs counter to all observation and evidence but billions are people are trapped in a vast mass delusion and that delusion strongly shapes what they believe about the world, their concept of right and wrong, and what evidence they will accept or reject.
It applies to everyone, including us. We're all servants to our biases and beliefs and we'll always interpret the phenomena we encounter through the lens of those biases and beliefs. All you can really do is hope that you're closer to "reality" than the other guys and that your efforts will bear fruit. That's a huge part of why science is such a powerful weapon, and why the "Scientific" in Scientific Socialism is vital; We're hopefully operating within a system of belief where we can be wrong, and when we find ourselves to be wrong we can evaluate our beliefs and change them to better suit the available evidence. This has advantages and disadvantages - We are able to understand our enemies in a way the libs largely aren't, we can adapt to changing circumstances and apply leftist principles in wildly different circumstances, we can explore our failures and come up with genuinely useful new information.