[1] Estberg competed at the 2012 Junior European Championships and helped the Swedish team finish 9th.

[2] At the 2014 Cottbus World Cup, Estberg competed on the balance beam and the floor exercise, but she did not qualify for the event finals.

[3] She competed at the 2014 European Championships with Emma Larsson, Jonna Adlerteg, Kim Singmuang, and Nicole Vanstroem, and the team finished 12th.

[5] Estberg won the silver medal in the all-around behind Marcela Torres at the 2015 Swedish Championships.

[8] She then competed at the 2015 World Championships with Ece Ayan, Marcela Torres, Emma Larsson, Veronica Wagner, and Kim Singmuang, and the team finished 22nd.