What is the best course of action with a father who commits sins, does not fulfill his family duties, and wants to marry another woman, with the possibility of the children being evicted from the house if they object?

The father mentioned in the question combines a number of reprehensible acts, including his negligence in prayer, his shortcomings in providing for his wife and daughter, and watching pornographic films. Nevertheless, he must be honored, prayed for guidance, and be subjected to advising companions. His second marriage should not be objected to if he is capable of being just between the two wives, and the mother does not have the right to demand a divorce merely because the father remarried. One must deal wisely with parents to avoid falling into disobedience to parents, as it is one of the major sins.