Searching for my father

Hi my name is lesego portia Ramakgasha am 26 years old i am the last born child of Rosinah Ramakgasha who passed on the year 2004. Ever since i was born i never heard nor knew ma father till today i didnt know where to even begin searching for him because i dont even know his name nor his last name. So am begging with all my heart for you to help me find him because i need him just for him to know me not that i want anything from him no i have a lovely grandmother who has been taking care of me ever since ma mom passed