Preda competed at the 2017 Romanian Junior Championships, placing eighth in the all-around in her age group. In the event finals, she placed seventh on uneven bars and balance beam and eighth on floor exercise.[1] She placed fifth in the all-around at the 2019 Romanian Junior Championships in the espoir division.[2] She then placed 17th in the all-around while competing against seniors at the 2019 Romanian Championships.[3] Then at the 2019 Romanian Individual Championships, Preda finished fourth in the all-around in the espoir division. In the event finals, she won bronze medals on the vault and uneven bars in addition to placing fourth on the balance beam and fifth on the floor exercise.[4]
Preda made her international debut at the 2019 Salamunov Memorial, placing fourth in the all-around and winning the gold medal on the vault.[5] She then competed at the Olympic Hopes Cup where the Romanian team finished seventh.[6]
Junior
Preda finished second in the all-around among juniors at the 2020 Romanian Championships behind Ana Bărbosu, and she won a bronze medal in the vault final.[7] At the 2020 Junior European Championships, Preda won a gold medal with the Romanian team. Individually, she won a bronze medal on the balance beam behind Bărbosu and Hungary's Gréta Mayer.[8]
Preda won the silver medal in the all-around at the 2021 Romanian Junior Championships behind Amalia Puflea.[9] She then placed fifth in the all-around while competing against seniors at the 2021 Romanian Championships, and she placed seventh in the uneven bars final.[10] She finished the season competing at the Tournoi International with Amalia Ghigoarță and Sabrina Voinea, and they won the team gold medal. Individually, Preda finished fourth in the all-around and sixth in the balance beam event final.[11]
Senior
2022
Preda became age-eligible for senior international competitions in 2022. She began the season at the City of Jesolo Trophy, helping the Romanian team place fourth.[12] Then at the Petrom Cup, she won the all-around bronze medal behind Ana Bărbosu and Ioana Stănciulescu.[13] She competed at the Sedan Friendly where the Romanian team lost to France.[14] At the European Championships, Preda and the Romanian team finished ninth in the qualification round, missing out on the team final.[15] At the Romanian Championships, Preda won the all-around bronze medal behind Bărbosu and Amalia Ghigoarță.[16] She won a silver medal on the balance beam and a bronze medal on the floor exercise at the Mersin World Challenge Cup.[17] Despite qualifying a full team, Romania decided to only send two gymnasts to the World Championships– Bărbosu and Preda.[18] Preda finished 58th in the all-around during the qualification round.[19]
2023
Preda competed at the European Championships, helping the Romanian team finish fifth.[20] She placed fourth in the all-around at the Romanian Championships, and she won the silver medal on the uneven bars behind Ana Bărbosu.[21] She competed at the Heidelberg Friendly with the Romanian team that won a silver medal behind Germany.[22] She was selected to compete at the World Championships alongside Bărbosu, Lilia Cosman, Amalia Ghigoarță, and Sabrina Voinea. The team finished in tenth place, earning Romania a team berth for the Olympic Games for the first time since 2012.[23][24]