How can the situation of a young man be rectified, who finds it difficult to perform Fajr prayer regularly, and wishes to marry a committed girl whom he sees as a partner who will help him in his religion, but he heard that she is engaged to a friend of his?

The companionship and interaction of girls is a wide door to temptation. Proposing to an engaged girl is not permissible except with the fiancé's permission, due to the saying of the Prophet, peace and blessings be upon him: "One should not propose over the proposal of his brother unless he gives him permission." However, offering money for the fiancé to relinquish his engagement is permissible, as it falls under the category of relinquishing moral rights for compensation. Based on this, there is no legal impediment for you to ask your friend to relinquish his fiancée, with or without compensation.