How do you convince your parents that you don't want to get married being an aro ace? Help please

It seems everything is just tough, living is very tough when you are being judged in every possible way when you say no to parents. It's just seems upbringing that we blame ourselves too for everything.. I can't figure out how to convey this to them I can't marry someone when this whole arrange marraige system purpose don't align with my situation. I had tried to open about this to my family, but they have just ignored it like nothing... Like it was just a phase. It feels like whatever I say or think is all going into some void. It has no meaning at all... I just don't understand why & how a person's whole existence depends on only one decision & that is to get marry... I even encountered some situations where some of my friends whom I believed they would understand me, also were like it's not like that, it can't be like this, how would you know if you have not tried... I feel I have nowhere to go... Sorry for this rant.. i am grateful to this space where I feel somehow validated, therefore I am asking for advice here...