Irnazarova joined Uzbekistan's national group in 2017.[2] She competed at her first World Championships in 2018 where the Uzbek group finished 17th in the all-around.[3]
Irnazarova helped Uzbekistan win a silver medal in the group all-around at the 2019 Tashkent World Cup. They did not win medals in either apparatus final.[4] They then won another all-around silver medal at the 2019 Asian Championships and won gold medals in both apparatus finals.[5] At the 2019 World Championships, Irnazarova and the Uzbek group finished 14th in the all-around.[6]
Irnazarova competed at the 2020 Moscow Grand Prix where the group won bronze medals in both apparatus finals and placed fourth in the all-around.[7] They then won the group all-around at the 2020 Tartu Grand Prix and won silver medals in both apparatus finals.[8] At the 2021 Moscow Grand Prix, she helped Uzbekistan win the group all-around bronze medal, and they also won a bronze medal in the 5 balls final.[9] The group then won the all-around title at the 2021 Tashkent World Cup. They won another gold medal in the 5 balls finals and won a silver medal in the 3 hoops and 4 clubs final.[10][11]
Irnazarova was part of the Uzbekistani group that won the all-around at the 2021 Asian Championships, and they also won gold medals in both the 5 balls and 4 clubs + 3 hoops finals.[12] As a result, Uzbekistan earned the continental berth for the 2020 Summer Olympics.[13] Then at the Minsk World Challenge Cup, they won the bronze medal in the all-around behind Israel and Bulgaria.[14] At the 2021 Moscow World Challenge Cup, the group won the all-around bronze medal and silver medals in both apparatus finals.[15]
At the 2020 Summer Olympics, Irnazarova competed alongside Kseniia Aleksandrova, Dinara Ravshanbekova, Sevara Safoeva, and Nilufar Shomuradova. They finished ninth in the qualification round for the group all-around and were the first reserve for the final.[16]