She has won one doubles title on the WTA Challenger Tour along with twelve singles and six doubles titles on the ITF Circuit.

On 12 September 2022, she reached a career-high singles ranking of world No.

Playing for Croatia, Lukas has a win–loss record of 6–7 in Billie Jean King Cup competitions.

Partnering Dalila Jakupović she won her first WTA 125 doubles title at the 2022 Makarska International, defeating Olga Danilović and Aleksandra Krunić in the final.

[2] This biographical article relating to Croatian tennis is a stub.