I am 58 years sold and found out my maternal grandfather adopted my mother
I am not sure how to change or what to call that relationship. Also found out my mother gave up a child for adoption before I was born. I notice there are tools related to facial recognition. Would thee be a way to find my long list brother somehow. Mom and dad are both deceased and nobody seems to know anything. We do have and old photo album with pictures of a man who may have been my half brothers dad. I know it's a long shot but thought I'd ask someone's opinion. I've never done 23 and me but my sister did.
Thanks for any suggestions. Also, I know there are some duplicates and errors on my family tree that I need to figure out how to correct.