[1] Aït El Hadj was going to be free in the summer 2022, because his old contract was to expire on July 7, 2022, making it necessary for him to extend it as soon as possible, at the risk of seeing him join another club.
[3] On June 3, 2023, Ait El Hadj won the first title in his football career by winning the 2022–23 CAF Confederation Cup after defeating Young Africans of Tanzania.
Ait El Hadj accompanied by his agent, conducted an interview with the club's sporting director Taoufik Korichi who convinced him to stay.
[9] On January 30, 2025, Mohamed Ait El Hadj terminated his contract with USM Alger and obtained his documents after he rejected the idea of loaning him to another club.
[10] In December 2022, Mohamed Ait El Hadj was called up by Madjid Bougherra for the first time to the Algeria A' National Team for a week-long training camp in Algiers.