[12] She performed well on both days of the competition and was the only junior gymnast to score in the top four on all four individual events: fourth on balance beam, third on uneven bars and floor exercise, and first on vault, where she stuck her double-twisting Yurchenko vault on the second day of competition to edge out Wong, the defending champion on the event.

Individually she finished fourth in the all-around behind Russians Viktoria Listunova and Vladislava Urazova and Ou Yushan of China.

[23] On the second day of event finals she won bronze on balance beam behind Elena Gerasimova of Russia and Wei Xiaoyuan of China and placed seventh on floor exercise.

[24] In July DiCello competed at the U.S. Classic where uncharacteristic falls on the balance beam and floor exercise resulted in an eleventh place finish in the all-around.

At this competition, DiCello increased her floor difficulty by debuting a full-twisting double layout, or Chusovitina as her first tumbling pass.

In January it was announced that DiCello would make her senior debut at the American Cup, taking place on March 7.

[30] At the National Championships DiCello finished 11th in the all-around after errors on uneven bars and balance beam on both days of the competition.

[32] In October DiCello was selected to compete at the 2021 World Championships alongside Leanne Wong, Konnor McClain, and eMjae Frazier.

[36] On the first day of competition she won gold on floor exercise and helped the United States qualify to the team final in second place.

[38] During the team final DiCello competed on uneven bars, balance beam, and floor exercise, helping the United States win silver behind Brazil.

[39] In August, DiCello competed at the National Championships with upgraded routines, most notably restoring her Baitova (double-twisting Yurchenko) on vault.

[40] Despite her placement making her an early favorite for the 2022 World Championships team, DiCello did not compete at the selection camp, as she had begun training for the NCAA collegiate season at the University of Florida.

In late April, DiCello announced that she would take a gap year from the University of Florida and return to elite-level training with coach Kelli Hill in order to pursue her goal of making the 2024 Olympic team.

Additionally, she was named to the team to compete at the 2023 Pan American Games alongside Jordan Chiles, Kaliya Lincoln, Zoe Miller, and Tiana Sumanasekera.

Additionally, she earned the fourth highest-score on uneven bars behind teammates Miller and Chiles, but was excluded from the final by the two-per-country rule.

In event finals, DiCello placed fourth on balance beam and won silver on floor exercise behind Lincoln, tying with reigning World bronze medalist Saraiva.

She hit all four routines, debuting new upgrades on the uneven bars, balance beam, and floor exercise, to take the all-around title with a score of 56.850, more than two points ahead of World Championships teammate Skye Blakely and reigning US junior national champion Hezly Rivera.