[1] She has taken part in the finals of the Polish Youth Chess Championships many times in various girls age groups.

In 2013, she won the gold medal in the Polish Youth Rapid Chess Championship in U14 age group in Olsztyn.

[5] In 2015 she won a bronze medal (together with Alicja Śliwicka) in the European Youth Team Chess Championship.

In 2023, in Suwałki, Kubicka won the silver medal of the Polish Women's Blitz Chess Championship.

[11] Also she won two medals in Polish Women's Rapid Chess Championships: gold (2016) and bronze (2019).