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Yes, his books strongly convey emotional experiences and torments. But that's exactly what I like about them, precisely because so much attention is paid to the soul. Gogol was more interested in either comical situations or mysticism. Tolstoy was most concerned with form, who was dancing with whom at the ball and in what dress. Although I liked his "War and Peace," I didn't finish reading a few chapters (in them, he got completely carried away, proving the same idea throughout a very large part of the narrative, using the same arguments and even the same examples; it's clear that he was very afraid that people wouldn't agree with him :)). But Fyodor Mikhailovich went in the right direction and made great progress in that direction.
But indeed, if it's difficult to read his large works, you can read his short stories (they all take up just a few pages, but the author's style is fully evident in them). I've already mentioned two, and I can add "The Peasant Marey" to that list; the latter is very kind and uplifting, so I think it would suit Nagana