[4] In the following season, Berreiter was promoted to the Junior World Cup but she was unable to fully match her impressive youth performance in her new age group.

[5] In the 2017/18 season, after fifth-place finishes at the opening two races in Oberhof, Berreiter was runner-up to Jessica Tiebel in Königssee and reached her first podium in the junior level.

[7] At the 2018 Junior World Championships in Altenberg, Berreiter missed the medals and finished 5th despite recording the 2nd best time in her second run.

[14] In the Junior World Cup tour; Berreiter was the overall leader by 69 points before the season finale in Oberhof, but she gave away the title to Tatiana Tcvetova after crashing out in the first run,[15] and dropped to third place in the overall rankings.

[16] Berreiter advanced to the German senior World Cup team in 2019/20 season following the retirement of Tatjana Hüfner and the maternity leaves of the Olympic medalists Natalie Geisenberger and Dajana Eitberger.

In Whistler, despite her little experience in North American tracks, she was able to win the Nations Cup race and earned her first success in senior level.