In 1998, Nzanga alongside his mother, Bobi Ladawa, created the "Mobutu Foundation" in hopes of helping young men and women in Africa reach their full potential.

He also served as director at Casa Agricola Solear, a Portuguese agriculture and livestock company, and became a member of the Renaissance think tank in Belgium.

[2][9] Explaining the move, government spokesman Lambert Mende accused Mobutu of "abandonment of service" for staying in Europe since November 2010 "without any explanation."

[9] Apparently, Kabila had tried to foster a good relationship with Mobutu by appointing him consecutively as second in the government, but the latter seemed uninterested in it and focused solely on his work.

[2] Reportedly, Mobutu's reasoning for his prolonged stay in Europe was due to his disagreement with President Kabila's cultivation of a close relationship with Kagame's regime, which was believed to be responsible for the violence that occurred in the eastern region of the Democratic Republic of Congo.

On January 10, 2023, he returned to the DRC where he continues to lead his political party and supported incumbent President Felix Tshisekedi in the December 2023 elections.