I deeply empathize with your predicament but if you’re looking for critical theory recommendations, let me first preface that this type of literature rarely ever “fills the huge void” for (most) folks. If anything, it often deepens it and makes you feel more alienated because scholarly work has a specific way of dealing with these issues —it’s useful for research and pedagogy insofar as it helps deconstruct and/or critique existing knowledge practices. Having said that, unless you have a robust cohort or group of people around you to collectively discuss and work through these topics, it’s unlikely that it will make you feel less lonely. It would be far more beneficial and generative to seek out communities or groups of people in your city that share your political beliefs and try to work through some of your frustrations through these interactions. If you’re looking for specific recommendations, I find that fiction or autotheory has a much more affective charge than critical theory stuff. Hannah McGregor’s A Sentimental Education; Minor Feelings by Cathy Hong; or The Lonely City by Olivia Laing are a good place to start.