[3] Ngankam made his professional debut for Hertha BSC on 16 May 2020 in the Bundesliga, coming on as a substitute in the 79th minute for Vedad Ibišević in the away match against 1899 Hoffenheim, which finished as a 3–0 win.

[9] Ngankam was included in Germany's squad for the 2017 FIFA U-17 World Cup in India.

He made four appearances during the tournament, in which Germany were eliminated in the quarter-finals with a 2–1 loss against Brazil.

[10] His brother Roussel is also a footballer, and appeared for the Germany youth national teams.

This biographical article related to association football in Germany, about a forward born in the 2000s, is a stub.