What is the way to sincere repentance from the preliminaries of zina (unlawful sexual intercourse), and is the repentance of one who repeatedly commits the sin accepted despite knowing its prohibition, and what is the ruling on these actions and their expiation?

The door of repentance is open and will not close until the sun rises from the west, and no matter how great the sin, Allah's forgiveness is greater. Sincere repentance (Tawbah Nasuh) requires abandoning the sin, regretting it, and resolving not to return to it, and not despairing even if the sin is repeated. To achieve uprightness, associate with the righteous, avoid places of suspicion, increase in supplication (Du'a), and marry if you are able, otherwise, you must fast. Strive to seek knowledge, attend Quranic circles, and engage in beneficial activities that distance you from reprehensible acts. Sincere repentance erases all sins, for the one who repents from a sin is like one who has no sin.