Holasová began the 2019 season at the World Cup in Doha and finished 5th on the balance beam. She then competed at the 2019 European Championships, and she qualified for the all-around where she finished 22nd. She then won every event at the 2019 Czech National Championships. She won the silver medal on floor at the 2019 European Games behind Anastasiia Bachynska It was the first time in thirteen years that a Czech gymnast medaled at a continental championship. She then competed at the World Cup in Paris where she finished 4th on vault and won the bronze medal on the floor exercise. She was selected to compete at the 2019 World Championships along with Sandra Jessenova, Lucie Jirikova, Anna Maria Kanyai, and Dominika Ponizilova. The team finished 23rd in the qualification round, and she finished 51st in the all-around which earned her an individual spot at the 2020 Olympics.