Bio mom kept my brother…anyone else have this struggle?

I was told I was adopted for as long as I can remember. Adopted at 16 months after a year with bio mom and the rest of the time in foster care. I knew from the non ID info that I had a full bio brother that my bio mom kept. I know that was a layer on top of just being “given away” the fact she kept my bio brother who is 14 months older than me was always excruciatingly painful as a kid and teen.

I found my bio family when I was 34. I know without a doubt I was better off, but I still look at my young self with so much sadness: the grief I had no name for and the knowledge I was “singled” out to be given up. I was an angry teen and now I can look back and see why.

Anyone else have this situation?

I am 56 and most of the time, I am ok and have learned to accept my origins but still am sad for the younger version of myself that felt so rejected while being told I should be grateful, “she loved you so much she gave you up bc she couldn’t do right by you”.

I adopted in 1972 when adoption “experts” told AP just love them and they will be ok: I never had the kind of support for the deep feelings I had of rejection and “differentness”.