It's too far stretched

Today we discussed The Secret Agent and whether we viewed it as a comedy or as a tragedy. I honestly, find this novel to be a comedy. Aside from the terrible events leading up to Stevie's death, I don't see much else that is tragic. Verloc isn't a character I disliked but his presence was monotonous and didn't add much to the entirety of the book. And Winnie, a darling and caring sister and reasonably good character, had no real tie on my heart. Before the end, when the murder and deaths begin I was just annoyed with the writing and how little plot was developing. When I reached the end I was waiting for the end. It was all too planned, too expected. It was almost too much to have the story end with all of the characters dying. I wasn't a fan of the end of King Lear and in my mind the endings of the two pieces are the same. I couldn't feel sadness for anyone but Stevie and once the murder of Verloc and suicide of Winnie came about I wasn't impressed. There is also comical situations and dialogue throughout the book. In combination with the comical tone set throughout the book I couldn't take the end too harshly. It was just too much. I classified it as a comedy but understand why people believe its a tragedy. Feel free to respond if you have a different take.