She represented Nigeria at the 2019 African Games held in Rabat, Morocco and she won the silver medal in the women's 45 kg event.

Kingsley won the gold medal in the women's 49 kg event at the 2021 African Weightlifting Championships held in Nairobi, Kenya.

She also competed in the women's 49 kg event at the 2021 World Weightlifting Championships held in Tashkent, Uzbekistan.

[3] The 2021 Commonwealth Weightlifting Championships were also held at the same time and her total result gave her the gold medal in this event.

[6] Kingsley finished in 4th place in the women's 49 kg event at the 2022 Commonwealth Games.