Vănoagă won the all-around silver medal in the level 5 division at the 2021 Romanian Junior Championships.[2] She then made her international debut at the FIT Challenge and won the bronze medal with the Romanian junior team. Individually, she finished 19th in the all-around, eighth in the uneven bars final, and seventh in the floor exercise final.[3] Then at the senior-level Romanian Championships, she finished ninth all-around.[4]
2022
Vănoagă began the 2022 season at a friendly meet against Hungary in Tata. The Romanian team won, and Vănoagă won the all-around gold medal.[5] She then finished seventh all-around at the Romanian Junior Championships due to mistakes on the uneven bars.[6] She once again finished seventh in the all-around at the Petrom Cup.[7] At the senior-level Romanian Championships, she finished eighth in the all-around and in the vault final and sixth in the balance beam final. In the floor exercise final, she won the silver medal behind Amalia Ghigoarta.[8] She then competed at the Tournoi International in Combs-la-Ville, France. After only scoring 8.366 on the uneven bars, she finished 20th in the all-around and sixth with her team.[9] She won the all-around title at the Romanian Junior Individual Championships.[10]
2023
Vănoagă began the 2023 season at the DTB Pokal Team Challenge and helped the Romanian junior team place sixth. Individually, she finished sixth in the all-around and fourth in the balance beam final.[11] She was selected to compete at the 2023 Junior World Championships alongside Crina Tudor and Anamaria Mihăescu, and the team finished in eighth place.[12] Individually, she qualified for the balance beam final in fourth place.[13] In the event final, she won the silver medal behind Yu Hanyue with a score of 12.833.[14] She also qualified for the all-around final where she finished 17th.[15] She won Romania's only medal at the Junior World Championships.[16]
Vănoagă won the all-around silver medal at the Rising Stars Trophy in Bucharest behind Croatian Mila Prpic.[17] She was then selected to compete at the European Youth Olympic Festival, and she was selected as one of Romania's flag bearers for the opening ceremony.[18] She qualified for the all-around final where she finished seventh.[19] She then won the silver medal in the balance beam final behind Germany's Helen Kevric with a score of 12.866.[20] She finished sixth in the floor exercise final with a score of 12.366.[21]