@”Kapitán Denis” well, modern cyrillic is a disgrace, imo. Some glyphs disappeared because the corresponding sounds fell into disuse, some to make it more accessible to idiots. Still beats half the alphabet being ‘c’ with diacritics, tho.
Relying on small variations of the same symbol to express different sounds is a fundamentally bad design, which makes reading strenuous, especially for non-native speakers. Polish orthography is likewise horrendous for a different but related reason – those consonant clusters, мѧжъ.