Alexeeva was born in Moscow, Russia, and began her gymnastics there training under Dina Kamalova, the same coach as eventual Olympic champion Aliya Mustafina.

[7] On 20 July, Alexeeva was named to the Russian team to compete at the 2018 European Championships alongside Melnikova, Simakova, Lilia Akhaimova, and Uliana Perebinosova.

She once again competed on uneven bars and balance beam in the Team Finals where Russia won the gold medal.

[9] On 29 September, Alexeeva was named on the nominative team roster to compete at the 2018 World Championships in Doha, Qatar alongside Akhaimova, Melnikova, Aliya Mustafina, and Simakova.

[12][13] During the team final Alexeeva competed on vault, uneven bars, and balance beam, helping Russia win the silver medal.

[17] While Alexeeva had not announced any commitments, she had an official visit to Stanford University the previous fall, sparking rumors that she'd join their gymnastics team.

[18] On September 20, Alexeeva announced on Instagram that she will be attending Stanford University and competing on their gymnastics team, starting in the 2020–2021 school year.

The following week she competed in a dual meet against San Jose where she made her collegiate debut on balance beam.