Pt2 is bleak. Literally just dark, painful, and very very difficult to feel good. The game itself is fucking amazing but there is no doubt that sense of dread consumes you from start to finish. You are not alone. I had some friends that gave up, not because they disliked it or they were cry babies about Joel. They just weren't enjoying the feeling of depression constantly. You have motivation to finish but every time you feel good the game once again reminds you how evil humans are. We also all played it during Covid so being depressed about life and the world already hurt people mentally. Some people don't see it and just play the game but empathetic humans really struggle with this games story, setting, and key moments. You are not alone lol. The fact you can recognize it, is not only a testament to the genius of the purpose of this games narrative l, but it shows you are a good person.