Any Nigerian MEN on Y/A or WOMEN, please answer this cultural question???? ?

Ok so i am a black female who recently ended a longterm relationship with a Nigerian male...dude treated me badly and carelessly...i was there for him thru his family issues, i supported him financially, and even took care of his daughter...mind u I am a 20 yr old college student...i dont like to generalize but i met another guy who happens to be nigerian and im really interested but im scared...are a lot of nigerian men cold hearted and users? I heard a lot about men in that culture and how women are slightly inferior but for those living in the US the majority of ur lives...are there some really genuine ones?