Byczkowska was born in Gdynia and grew up in Gdańsk and Kartuzy.[1][2] She was a swimmer in her youth.[3] At the age of 18, she moved to Warsaw to attend the National Academy of Dramatic Art, and graduated in 2019.[4] After graduating, she began acting at the Teatr Dramatyczny [pl] in Warsaw.[5] She was featured on the cover of Elle Polska in April 2024.[6]