She won the gold medal in the women's 78 kg event at the 2021 World Judo Championships held in Budapest, Hungary.

[2] She also won one of the bronze medals in both the women's 78 kg and mixed team events at the 2020 Summer Olympics held in Tokyo, Japan.

[3][4] In 2018, Wagner won one of the bronze medals in her event at the European Judo Championships held in Tel Aviv, Israel.

In 2021, Wagner competed in the women's 78 kg event at the Judo World Masters held in Doha, Qatar.

[8] Wagner won the Judo World Championship defeating the number one ranked competitor from France, Madeleine Malonga, to capture the gold medal.