How can a man know if a woman will be a loving and fertile wife before marriage?

Her fiancé does not pray and deals with riba. Should she go ahead with the wedding?

Her father engaged her to him, then her father died and her paternal uncles want to change the agreement

If the husband is the woman’s wali, can he get himself married to her?

Should she marry a man who is a carrier of thelassaemia?

He loves a girl but his family refuses her because of her father’s bad reputation

What is the ruling on a father preventing his daughter from marrying who she wants?

Her fiancé refuses to let her wear hijab

She loves her cousin and he has proposed to her but he does not pray apart from Jumu’ah (Friday prayer)

He got to know her through a forum and he wants to propose marriage to her