What should I do about my father's irritability and his refusal to accept my advice not to associate with his friends, and my inability to seek help from any righteous people to solve this problem?

Allah is the Guide, and a Muslim must do their utmost. If advising the father proves difficult, one can supplicate for him and display righteous deeds before him, so he may emulate them. Indeed, Ibrahim prayed for his father and his offspring to be guided. We recommend exhibiting good character towards the father and offering advice with wisdom and beautiful admonition, while respecting his rights and status.