2019

Bachynska turned senior in 2019 and made her debut at the Ukrainian Championships. She finished second behind Angelina Radivilova.^[12] She later competed at the Baku World Cup where she qualified to the uneven bars and balance beam finals.^[13] She finished seventh in the uneven bars final and fourth in the balance beam final, incurring a 0.5 penalty for having her coach present on the podium.^[14] In April Bachynska competed at the 2019 European Championships where she placed fifth in the all-around and seventh on the balance beam.

In June Bachynska competed at the European Games alongside Diana Varinska and Angelina Radivilova, where she qualified to the all-around in fourth place and the floor exercise final in second. During the individual all-around final she suffered mishaps on the uneven bars and the floor exercise and she finished in 14th place.^[15] During the floor exercise final she performed cleanly and won gold.^[16]

After her success at the European Games, Bachynska received an apartment from the mayor of Ternopil.^[4] She was also awarded the Order of Princess Olga by the President of Ukraine, Volodymyr Zelensky.^[17]

In September Bachynska competed at the Paris Challenge Cup where she won silver on balance beam behind Anastasia Agafonova of Russia and placed sixth on uneven bars.^[18]

In October Bachynska competed at the 2019 World Championships where she finished the all-around with a score of 52.165 and did not qualify to any event finals nor was Ukraine able to qualify a team to the 2020 Olympic Games. Due to teammate Diana Varinska scoring higher than her, Bachynska was not able to qualify as an individual to the 2020 Olympics either.

In November Bachynska competed at the Cottbus World Cup where she placed fifth on balance beam but won gold on floor exercise.

2020

In late January Bachynska was listed on a nominative roster that was released for the Melbourne World Cup, taking place on 20–22 February. While there she qualified to the uneven bars and balance beam finals where she placed seventh and third respectively.^[19][20] She later competed at the Baku World Cup; during qualifications she finished seventh on vault, sixth on uneven bars, and third on balance beam and therefore qualified to the event finals.^[21] However event finals were canceled due to the COVID-19 pandemic in Azerbaijan.^[22]

In December Bachynska competed at the European Championships. During qualifications she helped Ukraine qualify second to the team final behind Romania and individually she qualified to the balance beam final. During the team final Romania suffered many mishaps which allowed Ukraine to win team gold.^[1][23]

2021

Bachynska competed at the 2021 European Championships in Basel where she qualified to the all-around final and was the second reserve for the balance beam final. During the all-around final she placed 20th. Bachynska was able to compete in the balance beam final after top qualifier Larisa Iordache withdrew due to a kidney infection and first reserve Marta Pihan-Kulesza withdrew due to an injury sustained during the all-around final. Bachynska performed a clean routine and finished third behind Mélanie de Jesus dos Santos and Sanne Wevers.^[24]

Bachynksa next competed at the Varna World Challenge Cup where she won gold on the balance beam and placed sixth on the uneven bars. In June she competed at the Cairo World Challenge Cup where she finished eighth on balance beam.^[25]

At the World Championships Bachynska qualified to the all-around and floor exercise finals where she finished tenth and seventh respectively.

2022

In February Russia invaded Ukraine. During the ongoing war Bachynska and her family fled their home country for Beaucaire, France, where Bachynska had been a member of their club, Gym Flip, and competed with them in France's Top 12 competitions.^[26]

On 15 August Bachynska announced her retirement from the sport.^[27]