Should I pursue marriage with the pious girl despite my brother’s opposition, or risk my family’s collapse?

I was sitting in a Masjid and this girl Salma was sitting in front of me and as soon as she looked at me she was like shivered of fear, then I came out of Masjid and I see her brother talking to my brother and sister. I did not get a good feeling about her brother (probably as not so nice guy).
(2) Where I see a very old building is getting collapsed and a few old cars were there on its roof and the whole building felt to ground. (3) Me and my eldest brother were trying to enter a house a dog came running out of it and tried to bite me, I tried to stop but it was just trying to bite me but not my brother”.
(4) I was in a house with lots of people and I was looking at a girl who was very beautiful and I liked her very much, but at the same time I see one more girl there very pious and felt like she is actually the girl I am looking in marriage? My brother is against this marriage and I think my family will collapse if I move further with this marriage. Please suggest me.