السلام عليكم ورحمة الله وبركاته Wallahi I try my best to be good to my father but my father keeps getting angry at me and I told him in a nice way “I don’t want this to become an argument” but he got mad and isn’t even talking to me. I try my best but it’s very difficult. Did I commit a major sin

Ustadh AbdulAziz al-Haqqan

No, and maybe u should just listen and say in sha'a Allah, yes, as u wish, if he is not asking you something that is forbidden.