She competes for the Skiclub Mittenwald, her hometown, and is trained by Bernhard Kröll, Albert Neuner and Benedikt Ertl at the biathlon base of the Skigau Werdenfels in Kaltenbrunn.

[7] At the 2022 World Junior Biathlon Championships in Soldier Hollow, USA, Grotian participated at the youth age group, winning a bronze in individual race.

At the beginning of the season, she qualified for the German IBU Cup team and made her debut at the senior level in Idre, Sweden.

At the highlight of the IBU Cup season, Grotian won the pursuit race of the European Biathlon Championships in Lenzerheide, Switzerland.

[9] At the 2023 World Junior Biathlon Championships, she won four gold medals in women's sprint, pursuit, relay, and mixed-relay races in Shchuchinsk, Kazakhstan.