How can Muslims reconcile awaiting two figures, the Messiah Jesus son of Mary and the Awaited Mahdi, while other Abrahamic religions await only one Messiah?

The true religion is Islam, which is founded upon the worship of Allah alone and belief in all His messengers. Corrupted Christianity deviated from this monotheism. Muslims believe in the appearance of a righteous man named Al-Mahdi who will unite and lead them. Then Jesus, son of Mary, peace be upon him, will descend, break the cross, kill the swine and the Dajjal (Antichrist), and pray behind Al-Mahdi. After Gog and Magog are destroyed by supplication, the earth will be purified, and only the people of monotheism and faith will remain. The questioner should learn about Islam and seek the truth.