Will a father go to Hell if he dies while his children are displeased with him due to his stinginess, lack of care, and not spending on them?

It is obligatory to be dutiful to one's father, even if he falls short in his duties towards his children. It is not permissible to describe him as stingy or use any other inappropriate language. One should forgive a deceased father and increase acts of seeking forgiveness, supplication, and giving charity on his behalf. As for his entry into Hellfire, it cannot be stated with certainty, but good-doers are hoped for good, while wrongdoers are feared for.