8 weeks old baby not taking formula

Hey everyone my son is 8weeks and 5 days old. I am breastfeeding him and tried to introduce formula many times but he just don’t take it and keep crying. I also tried different brands different bottles and nipples. I am also frustrated of people keep asking when will u introduce bottle bcoz baby will not take it otherwise. They just don’t know how hardly i am trying. Even my mil and sil keep asking when u will return to ur job. I really want to help hubby financially but cant see my baby crying from hunger.