Why is it necessary for a sunni Muslim to remarry some other guy after divorce and then remarry the 1st husband or wife why cant Muslim sunni marry the same guy after divorce?

In Sunni Islamic jurisprudence, the practice of requiring a woman to remarry another man before she can return to her first husband is based on the concept of "halala." This is intended to prevent the misuse of divorce and to ensure that the decision to reconcile is taken seriously, as it emphasizes the sanctity of marriage. The practice is meant to deter impulsive divorces and encourage couples to resolve their issues. However, it is worth noting that interpretations and practices can vary significantly within the Muslim community.