Kubka made her
WTA Tour main-draw debut at the
2021 WTA Poland Open in the doubles competition. Her singles tour-level debut was at the
2022 Poland Open, losing to
Elisabetta Cocciaretto in the first round. Kubka made her debut for
Poland in the
Billie Jean King Cup in November 2023 playing doubles in the
Finals. Partnering
Weronika Falkowska, she won the doubles title at the
2024 WTA 125 Poland Open, defeating
Céline Naef and
Nina Stojanović in the final. ==WTA Challenger finals==