أحسن الله إليك My dad and I had problems between us because of practicing religion so now I’ll be searching for marriage proposals soon in sha Allah and because of this my dad will most probably not listen to my requirements for a man so how can I ask help from my brother without backbiting my dad?

Well, advice should not turn to a problem. If it does there is something wrong in how you approached the dawah. So try fixing things with him. As for your brother, this is not backbiting because u just want him to help u fix things with ur father in sha'a Allah and finds solutions for u. And u should always remain respectful even when explaining to your brother.