She won the gold medal in the women's 55 kg event at the 2021 World Weightlifting Championships held in Tashkent, Uzbekistan.

[2][3] She also won the gold medal in the 58 kg event at the 2018 Summer Youth Olympics held in Buenos Aires, Argentina.

[7] As of May 2020, she holds the African junior records for these events in the women's 59 kg weight class.

[9] In 2021, Belkhir won the gold medal in the women's 59 kg event at the Junior World Weightlifting Championships held in Tashkent, Uzbekistan.

[10][11] She won the gold medal in the women's 59 kg Clean & Jerk event at the 2022 Mediterranean Games held in Oran, Algeria.