Ounahi played a crucial role in Morocco's historic journey to the semi-finals of the FIFA World Cup Qatar 2022. His performance caught the attention of Olympique de Marseille, who signed him in January 2023 from Angers SCO for $8.5 million, plus $2.1 million in bonuses as well as a percentage of a future sell-on fee. Born in Casablanca, Ounahi played in his home country from 2010 to 2018 before joining his first French club, RC Strasbourg.