At the 2020 Olympics, Otgontsestseg lost in the first round and subsequently ended her career. She later returned to Mongolia.
Now, 32-year-old Otgontsestseg is working as a coach. In December, she renounced her Kazakhstani citizenship and applied to regain her native citizenship.
In the 48 kg weight class, Otgontsestseg replaced Abiba Abuzhikanova, who finished fifth at the 2024 Olympics.