Some guardians use to formulate some mistakes, if a man reaches to seek their daughter's hand in marriage, they disqualify him because of his tribe and not his commitment to God
It is crystal clear that some tribes are found of some atrocities, and is also an agreed-upon fact that no tribe is free from shortcomings, but the religion of all tribes regulate their affairs.
If a tribe is been qualified with treachery and an individual from the tribe that understands the ruling on treachery will not near it, so the religion of the suitor matters much not his tribe, may Allah rectify our affairs!
Islam goes against tribalism in all ramifications, so therefore we need to focus on the religious aspect and have it in mind that adequate understanding will regulate issues.
We know some who are from some of the tribespeople believe they are good, but because of the low understanding of the deen of some people from such tribe, you will see them perpetrating atrocities that are usually perpetrated by some specific tribes.
For this reason, if you marry a tribe because you believe the tribe is good regardless of its religious standard you may not prosper!
Focus on your Deen and leave everything to God He will guide your steps.