Avgousti became age eligible for senior competitions in 2024, making her debut at World Cup in Sofia where she was 34th in the All-Around, 34th with hoop, 31st with ball, 42nd with clubs and 34th with ribbon.[2] In May she competed in the European Championships in Budapest, being 24th overall, 30th with hoop, 17th with ball, 18th with ball and 25th with ribbon.[3][4]
In 2025 she debuted in the World Cup in Sofia, finishing 40th in the All-Around, 50th with hoop, 56th with ball, 30th with clubs and 35th with ribbon.[5] At the Pharaoh's Cup, she took 5th place with hoop, 13th with ball, 6th with clubs and 6th with ribbon.[6] She then took part in the European Cup in Burgas, being 9th in the All-Around, 9th with hoop, 6th with ball, 11th with clubs and 7th with ribbon.[7] Later she competed at the 2025 Games of the Small States of Europe in Andorra, winning gold in teams (along Mikaela Eleftheriou and Nika Khodareva), the All-Around and in all four event finals.[8][9][10][11][12][13] The next month she participated in the European Championships in Tallinn, finishing 24th in the All-Around, 23rd with hoop, 18th with ball, 24th with clubs and 28th with ribbon.[14][15] At the World Cup in Milan she was 59th with hoop, 68th with ball, 48th with clubs and 32nd with ribbon.[16] In August she was selected for the World Championships in Rio de Janeiro, being 50th in the All-Around, 54th with hoop, 47th with ball, 42nd with clubs and 82nd with ribbon.[17][18]