She won the silver medal in the girls' freestyle 73 kg event at the 2018 Summer Youth Olympics held in Buenos Aires, Argentina.

[1][2] At the 2019 Pan American Wrestling Championships, held in Buenos Aires, Argentina, Machuca won the bronze medal in the women's 72 kg event.

[3] She won the silver medal in the women's 76 kg event at the 2021 Junior Pan American Games held in Cali, Colombia.

[4] In 2023, Machuca competed in the women's 76 kg event at the Pan American Wrestling Championships held in Buenos Aires, Argentina.

[6] Machuca won one of the bronze medals in her event at the 2024 Pan American Wrestling Championships held in Acapulco, Mexico.