Coached by Mishina and Alexei Mishin,[3] Samodurova started her season with gold at the 2017 JGP in Zagreb, Croatia, having obtained a total score 12 points greater than the silver medalist, Mako Yamashita.

She made her Grand Prix debut at Skate America, where she won the bronze medal behind Satoko Miyahara and Kaori Sakamoto with a personal best score of 198.70 points.

In mid-November she competed at the 2018 Rostelecom Cup where she won the silver medal behind Alina Zagitova after placing second in both programs.

She was the third-ranked skater eligible to compete at senior international competitions, behind Stanislava Konstantinova and Alina Zagitova.

[7] At the 2019 European Championships in Minsk, Samodurova placed second in the short program behind Zagitova, passed the 70-point mark for the first time.

[10] She rose to eighth place in the free skate, making only one minor error on a double jump, and said she felt "only happiness" with the result.

[12] Samodurova admitted to having some issues in training for the new season after falling multiple times at the Russian test skate events.

[15] Samodurova picked music from Harry Gregson-Williams' Mulan score for the free program, citing parallels between the title character and her own life as a "fighter.

[15] Samodurova's lone Grand Prix assignment for the season was initially the 2021 Cup of China, but following its cancellation she was reassigned to the 2021 Gran Premio d'Italia in Turin.

[15] Following the national championships, Samodurova decided to retire, and informed her coach that she intended to move to Kazakhstan to live with her parents and extended family.