Are the rights of people that relate to injustice, such as backbiting and taking money, taken from the oppressor's good deeds on the Day of Judgment, while the rights of Allah, such as drinking alcohol and committing fornication, are they also taken from good deeds even after sincere repentance, and is repentance sufficient in this case, or is retribution necessary?

Drinking alcohol and committing adultery are major sins. Sincere repentance, fulfilling its conditions (desisting from the sin, regretting it, and resolving not to return to it), erases these sins and transforms bad deeds into good ones if repentance is sincere and accompanied by faith and righteous عمل, in accordance with His, the Almighty’s, sayings: "And indeed, I am the Forgiver of him who repents, believes, and does righteous deeds, and then is guided," and: "Except for those who repent, believe, and do righteous deeds; for them Allah will change their evil deeds into good ones. And ever is Allah Forgiving and Merciful." As for adultery committed by a married woman, it entails two burdens: the right of Allah, which repentance atones for, and the right of the husband, which is not forgiven except by his pardon; otherwise, it will be taken from her good deeds on the Day of Judgment.