DeadMabelle nailed it here and this poster's response in quote marks is worth repeating:
Simplefoke · Today 09:12
@CrunchyCarrot that’s the point I’m learning. No matter how nice I am, how much I reach out or try and persuade them I’m nice, they don’t like me and that’s that. Apologising to my partner won’t make me a member of the inner family. I get the feeling I’m never going to be part of this. Which makes me sad as I never had it growing up either. It’s very hurtful. These people are really not very nice to behave like this. I never could.
"Bluntly, there’s your problem, OP. You’re trying to be ‘nice’ with the intention of persuading a family who don’t like you to include you as a ‘member of the inner family. All that’s doing, probably, is showing them that, however unpleasant they are, you’ll just keep accepting that, and this appears to be true in that, despite the fact that these don’t sound like nice people, you’re still desperate to be accepted by them — why?
And then you resent the situation because what you want isn’t happening, and you clearly hope that continuing to be ‘nice’ will somehow someday make something different happen.
Have you ever had any therapy? Because it strikes me that there’s a pattern — you say you weren’t part of a loving ‘inner family’ growing up, then were in an abusive relationship for twelve years, then you get together with someone who doesn’t seem very attuned to your needs, and who ranks ‘low’ in his family, whom you describe as ‘dysfunctional’."
Please take heed of the above.
I also note without much surprise that you are a people pleaser. This behaviour often comes about from wanting to please a difficult or emotionally absent parent. People pleasing does you no favours OP, its a problem that needs addressing in therapy. Your parents let you down abjectly and taught you a lot of damaging lessons about relationships, they set you up good and proper to tacitly accept being mistreated and abused because that was all they knew too. They had a choice when it came to you and they chose to repeat the same old shit that was done to them.