She next competed at the Hungarian Master Championships where she placed seventh in the all-around, third on balance beam, and fourth on floor exercise.

[2] In May 2018 Mayer competed at the Elek Matolay Memorial where she placed first in the espoir all-around and on vault, uneven bars, and balance beam.

[3] Mayer began the 2019 season competing at the Elek Matolay Memorial where she won silver on vault and balance beam behind Sabrina Voinea and on floor exercise behind Amalia Puflea.

Internationally she competed at the Olympic Hopes Cup in November where she helped Hungary finish first as a team and individually she placed first on floor exercise.

[8] In August Mayer competed at the European Championships alongside Zsófia Kovács, Zója Székely, Csenge Bácskay, and Mirtill Makovits.