Why does the questioner feel that Allah does not accept his repentance and does not want him to be among the people of Paradise, despite his attempts to rectify his mistakes, as he faces difficulties that increase his despair?

Allah the Almighty accepts the repentance of the penitent if they are sincere and fulfill its conditions, among which is the returning of rights to their owners, as stated in the Hadith: "The hand is responsible for what it took until it returns it," and seeking absolution from injustices before the Day of Judgment. It is recommended to seek Allah's help, supplicate, and not despair until all debts are settled.