Eight weeks later, he returned to competition at the German Championships and won the pommel horse title.

[15] He was selected to represent Germany at the 2020 Summer Olympics, held in 2021 due to the COVID-19 pandemic, alongside Lukas Dauser, Philipp Herder, and Andreas Toba.

Individually, he won the bronze medal on the pommel horse behind Harutyun Merdinyan and Loran de Munck.

[20] He then competed alongside Lukas Dauser, Pascal Brendel, Glenn Trebing [de], and Andreas Toba at the 2022 World Championships, and they placed ninth in the qualification round, making them the first reserves for the team final.

[23] He then competed at the 2023 World Championships and helped Germany qualify for the team final where they finished sixth.

[25] At the 2024 DTB Pokal Stuttgart, Dunkel won a bronze medal on the pommel horse.

[26] He was then selected to represent Germany at the 2024 Summer Olympics alongside Lukas Dauser, Pascal Brendel, Timo Eder, and Andreas Toba.