Zapotoczna moved from Poland to England for work reasons in December 2018 and settled in Wakefield.[3]
Unbeaten in her first six fights as a professional, she was brought in at short notice to face Shannon Ryan for the vacant WBA female super-flyweight International title at Indigo at The O2 in London on 10 February 2024,[4] losing by unanimous decision.[5]
Dropping down a weight division, Zapotoczna took on the previously undefeated Maisey Rose Courtney at the Copper Box Arena in London on 6 July 2024, with the vacant WBA female flyweight International championship on the line. She won via unanimous decision to claim her first pro-title.[6][7]
She was due to challenge European female flyweight champion Chloe Watson in September 2024, but the bout was postponed when her opponent suffered an injury. The contest was rescheduled to take place on an all-female card, headlined by a welterweight world title unification fight between Natasha Jonas and Lauren Price, at the Royal Albert Hall in London on 7 March 2025.[8] Zapotoczna won by split decision with two of the ringside judges scoring the contest 96–95 in her favour, while the third had it 97–93 for Watson.[9][10]
Zapotoczna made the first defense of her title against Justine Lallemand in Charleville-Mézières, France, on 15 November 2025.[11] She won via majority decision.[12][13]