Can charity alter a person's destiny, knowing that there is an unchangeable destiny and a suspendable one?

The answer to the question has been detailed in Fatwa no. 61928, and its summary is that Allah's knowledge in the Preserved Tablet does not change; it is the predetermined destiny. As for the suspended (mu'allaq), it refers to what is in the scriptures of the angels concerning deeds, provisions, and lifespans, which can change due to acts of obedience, maintaining kinship ties, and giving charity. This is a summary of what was mentioned by Al-Nawawi, Al-Qurtubi, Ibn Hajar, Ibn Taymiyyah, Al-Sa'di, and others. You can refer to the previous Fatwa and Fatwa no. 89492. And Allah knows best.