Asalamailkum Akhi,
Hope you are well, I am not a scholar I am just a layman although I intend to study the religion in the future(Bi-ithnillah), however I just wanted to give you some guidance as your brother in Islam. As far as I am aware if a man is interested in marrying someone it is his responsibility to speak to the father wether he asks alone or he brings a wali with him, he should speak to the father directly and he should avoid speaking to the potential spouse without her father being present. I suggest if you are really serious you need to man up and go speak to her father, otherwise you’ll just be going round in circles, also please akhi do some personal research in to this topic to make sure your not crossing boundaries your not meant to when looking for a spouse.