Will Allah Almighty forgive one who cursed the Holy Qur’an while in a state of tension and psychological stress, despite his remorse, repentance, and seeking forgiveness?

The Qur’an is the word of Allah, His revelation, and the Prophet’s eternal miracle. Insulting it is an act of disbelief (kufr). You have done well by seeking forgiveness and feeling remorse. You must repent with a sincere repentance that fulfills all its conditions, by increasing your good deeds and being cautious of anger. It is good that you regret this action, but you must think well of Allah and remember the vastness of His forgiveness and mercy to protect yourself from the whispers of Satan.