Nagera began his footballing career at the Académie de Football d'Épinay-sur-Seine. He joined the Paris Saint-Germain Academy in 2015. On 29 June 2020, he signed his first professional contract with Paris Saint-Germain (PSG), tying him to the club until 2023.[1] On 10 April 2021, Nagera made his professional debut for PSG, coming on as a substitute for Kylian Mbappé in a 4–1 win over Strasbourg.[2] On 18 June, he signed a contract extension with the club that would extend his contract until 2025.[3]
On 3 August 2021, Nagera signed for Ligue 2 club Bastia on loan until the end of the season.[4] However, after having made only six appearances for the club,[5] his loan in Corsica was cut short; on 17 January 2022, he joined Championnat National side Avranches on loan until the end of the season.[6] On 30 August 2022, Nagera was loaned to Lorient, joining the club's reserve side in the Championnat National 2.[7] After returning to PSG, he was released from his contract on 5 September 2023.[8]
Nagera joined Luxembourgish club Differdange 03 after leaving PSG.[9] He made his debut for the side in a 2–2 draw against UNA Strassen, scoring his team's second goal of the match.[10]