there are boys out there who are normal, yet have what you call “a blemish”. some people call a broken family not normal. my friend is getting married IY”H very soon. her parents are divorced, his father was niftar. he is an amazing boy, both from what my friend has told me, and from the few times i met him in person. there is no need to despair that there is no boy out there for you. every person has a zivug, and shidduchim sometimes literally fall from Hashem. right now the only thing you can do is daven to Him that you will meet and marry the best boy for you.
hatzlacha, and may you see alot of mazal and bracha come to you from Hashem