Complex sentence: Iskandarova made her Olympic debut, as Uzbekistan's first ever female swimmer, at the 2000 Summer Olympics in Sydney, where she competed in the women's 50 m freestyle.
Split into simpler sentences: Iskandarova made her official debut at the 2000 Summer Olympics in Sydney. She was the first uzbek girl, who participated in the Olympics, where she competed in the women's 50 m freestyle.