The 26-year-old missed a match defining penalty after attempting a cheeky chip [the paneka] that was easily gathered by Al Ahli goalkeeper Edouard Mendy in extra-time before Senegal scored the winner.
"I failed and I take full responsibility and apologise wholeheartedly," read a statement on his social media account.
"It will be difficult for me to recover because this wound does not heal easily, but I will try.
"Not for myself, but for all those who believed in me and for all those who suffered with me. I will keep going until one day I can give you all this love back and be the pride of the Moroccan people."
The diminutive attacker ended the 2025 AFCON tournament as the top goal scorer with five goals in seven matches to earn the Golden Boot in his first tournament.
He will be hopeful for a chance to redeem himself at the 2026 FIFA World Cup in North America later this year.
Diaz is expected to return to a reported 'special welcome' at Real Madrid on Wednesday, with the club throwing its support to the winger who has made 18 appearances for the Spanish giants this season, scoring once and providing two assists.
Mourinho has dismissed reports linking him with a sensational comeback to the Bernabeu, insisting there is no truth to speculation about a second spell in charge of the Spanish giants.
Real Madrid head coach Alvaro Arbeloa has admitted he wants to "eliminate" Jose Mourinho and Benfica when the two sides meet in the UEFA Champions League play-off first leg at Estadio da Luz on Tuesday night.
A superb performance from Vinicius Junior helped Real Madrid to an impressive 4-1 win over Real Sociedad, which lifted them to the top of LaLiga ahead of Barcelona's game on Sunday.
Arda Guler is reportedly at the centre of a dressing room crisis at Real Madrid, with claims that the 20-year-old midfielder is being "bullied" by his own team-mates.
