It used to be said that Dickens created caricatures, while Dostoyevsky created psychological characters.
Dickens did nothing of the sort. While his characters are very similar from book to book there is plenty of psychological commentary.
Dickens is not the academics’ favorite and they tend to disparage his writing. He also has an English outlook and disposition while Dostoevsky is thoroughly Russian. That meant living on the edge of hysteria for the intelligentsia.
Having been exposed to Western thought it was difficult to reconcile Russia’s backward condition with modernity and keep your mental balance.